A writer requiring portability would be much better off with an 11" MBA for writing and an iPad Mini for reading. Too much overlap between the Mini + Air. If anything, typing on the Mini is far easier.
I disagree whole heartedly....and I own all three. As proven time and time again, MANY of us have found very specific uses for each device. I'll always own both. The Air and the mini. I'll always own an MBA. And I'll (most likely) continue to own a desktop and several 15" laptops. We run a business. Everything is necessary and the iPad, iTunes, and the easy, seamless integration between my devices as well as their unparalleled reliability (we used Windows for six years pre switching to OSx in late 2007)---there absolutely ARE folks with different needs, wants, desires, and means than yourself. My gear is written off. Makes its money back dozens upon dozens of times over AND, get this...with Apple, their used gear is always worth something when you're done with it and ready to 'upgrade'
Not the case with a 2-3 year old Windows machine or Android phone/tablet
You're being WAY too specific when the OP nicely outlined his findings of the variations of usage. He's not just 'writing'. And I'm not sure I saw him talk about writing a novel
That said, there are now some exceptional keyboards for both the mini and Air with month long battery life. If you're a writer and wanted to consider the Air....to compliment your 11" MBA and rMini
I was being facetious. You said it yourself, it's for convenience sake alone. Because of the very minute difference in size and weight (a quarter of a pound and <2 inches in screen diameter), having both seems very superfluous to me and others on here. Better things to spend money on, in my opinion.
Correct. Your opinion. Not everyone shares that opinion and once you've owned and actually 'used' both iPads, the difference is incredible. We use our Airs for music production mixing and video mashing, live... In front of a thousand kids! It's amazing what these guys will do. The surface area of the Air makes a massive difference with the drum pads, synths, keyboards and the ability to see in real time your effects and recording levels. Manipulation of photos, motion, some games are incredible on the large screen. Davinci's book is unreal.
Then again, while I'll loved and used 'Night Sky' since it's release, it's a lot more enjoyable with the rMini checking out the night sky, relaxing in bed with a book...quick, around the house email, messaging, and Facebook or Twitter checks/responses. Mini wins. On the toilet, guess
I used to prefer the TV stand with my Marware case holding Early Edition up for me in the mornings
Truth told...and I did the same last year as we went from iPad 2s to the iPad 4s for our sound, lighting and video systems. So we bought 4 4s and I picked up the Mini (sold my iPad 3---as it was really bad with latency issues I in most of our audio apps). Loved it. Have a wife, she loves it...and was (is) using the iPad 2, I bought her the rMini for Christmas. We've got an 8 year old son that will no longer have to tolerate the sometimes finicky iPad 1---he'll inherit Mom's 2. And the original will get cleaned up and donated
Needs mean different things to different peeps. And we are a pretty diverse crowd. I'm sure it's also easy to mock the fella that enjoys collecting firearms, builds a $50k 2 channel vinyl sound rig, restores classic cars...and keeps several of them.
If the iPads are being used, how in the HELL could ANYone argue someone doesn't need them? Used = being enjoyed, working, producing or painting, reading or watching, developing or listening....I'm sure now one's needs are the same as another's on this board. It's ridiculous to argue otherwise. And for the holier than though BS, give it up. You, again, in your anonymity have NO IDEA what some folks do here for charity, philanthropy, helping their community....teaching and working with kids and technology....the list is truly....endless. Give it up. Go preach that crap somewhere else. The price of a pair of decked out 128GB iPad Air and Mini is under $1800. I remember not too long ago spending double that on a computer that was slower, plagued with issues and done...out the door in less than three years. To the recycle bin
It's saying something my so is still enjoying the almost four year old original iPad. Once you own more the one you realize just how 'personal' an iPad is. Hence the reason I don't think Apple is in any hurry to institute multiple user accounts. At $500, they're extremely reasonable. And if you don't need the latest version, you can spend $350-400 and double your storage with a nice pre owned or refurb from Apple
The OP really didn't even justify both, nobody really has. Just because you can, doesn't mean you should. It's wasteful. How? Because having one iPad is teetering on wasteful when it's purely for recreational use (most common). Few people need even one of these luxury items, let alone two. The vices of capitalism...
I don't even know where to start. Other than the fact the iPad has been instrumental in paying my mortgage, buying a cabin and an overhaul to my 185 last month.
Not sure what you do...but it is indeed obvious you aren't the iPad target audience. Many will be fine waiting for their evening news, morning paper or carrying a pen and paper to take your notes, manage your calendar and....really, that's it! I managed. I'm 43. No cell phones til I was outta college. No Internet. We used encyclopedias.
Capitalism ROCKS!
It's this exact mentality that seems so selfish and harmful. With a little less self-centerness, people could do great things, but instead they're left contemplating how many cars they want, if a smaller iPad would be nice, how big a TV they should buy, etc. Doesn't that excessive materialism bother you? I mean, if I had the means to buy every single new Apple product, should that decision really be unassailable? Should my constructed justification be impervious to criticism? Now I'm gonna dip out of this conversation before I start talking ethic theory and the virtues springing from self-restraint.
I think you're in the wrong thread. Maybe forum. Maybe website.
Is there a reason you took the time to reply with such eloquence? Do you honestly believe you'll change those of us that enjoy owning multiple devices?
I live in Alaska. I know some of you. They live in the middle of nowhere. Hunt. Fish. Build. Trap. Survive. A vicious cycle in extreme cold most of the year I want no part of.
On the flip side, I really enjoy the charity work we do, coaching my son's baseball team, helping the in laws with some bills... Is there some reason you believe by purchasing two iPads, you're no longer able to help others? Is it a 'jump' to a different level of materialism? What about those silly $500 jeans? $400 shoes, $25,000+ watches....what if? Are they all philosophically F'ed as you'd have us believe?
This is honestly just over consumption at best and sounds like you're just trying to justify keeping both. They couldn't be more similar.
There is no reason to have both. Screen sizes? Please.
Hopefully it's been made clear. Otherwise studying reading comprehension would be a great idea.
OMG, you're going to lecture me on materialism? LOL! Ok, I haven't LOLed since yesterday. Thanks for that.
Moral judgements aside, each iPad serves a different purposes, mainly centered around portability. The rMini is smaller, more portable, and easier to hold up for longer periods of time. So for things like reading, watching movies in bed, and carrying it out and about, it's perfect.
The Air has a larger screen, and I prefer it to play games and use around the house, but not carrying with me as much. If I had to I could. But I don't have to. So I use it wifi only around the house. When I leave, I take my LTE rMini with me.
I've found the biggest challenge is to keep the home screens synchronized. I much prefer they mirror one another. Some games, like Dungeon Hunter 4, don't support cloud saves, so I only get to play them on one device. Having cloud enabled apps is key to getting this setup to work. If I start a document while on the road, I can finish it at home either on the bigger iPad or the MBA.
I also find the rMini much more convenient to use as a GPS due to its smaller size. Fits well with an rMini as the "road" device approach.
I guess I shouldn't say my wife has her own iPad lest I be accused of being shallow and materialistic...
Thank you ZBoater. And DH4 absolutely ROCKS! I've enjoyed the entire series. 3 a bit less than the others, but just wanted to commend you on an excellent response
I totally agree with everything the OP said except replace iPad Air + iPad rMini with MB Air + iPad rMini.
...and an Air and you'd be just a it's complete. Air. Mini. MBA. iPhone. rMBP. A MP when they drop....you should be good. Anything less and you'll find yourself consistently 'behind' in society.

Of course and as always, ymmv and this has all been my VHOpinion
tl/dr----there absolutely IS a need to own both iPads. You've just got to buy them first. Use them. Then you'll figure it out.
J