Enjoyed your post

just a little nit picking on my end (sorry!) but a general FYI to those curious - the processor is not the same on the mini 4 and the air 2
The A8 =/= A8X even with the extra core....they are very similar in that the A8X is like a variant or enhanced chip in almost every way, however they are not the exact same processor (that is to say the A8X is
not simply an A8 at a higher clock with an extra core)
The mini 4 processor is actually the same as an iPhone 6 or iPhone 6+ Just at a slightly higher clock iirc
Further, the same can be said of the GPU - the mini 4 uses the same one as the iPhone 6 /6 plus (albeit also a slightly higher clock I believe)
The air 2 uses a more powerful GPU than the mini 4
All in all the mini 4 is like a bigger, slightly faster iPhone 6 or 6+ with 2GB of ram whereas the Air 2 is a fair bit more powerful (especially with respect to the graphics)
That said - it doesn't change that I love my mini 4 any less

it packs more than enough processing power for its uses (at least for me). Also goes to show how far the iPhone 6 and 6+ may have been able to go with 2GB of ram, that changes the user experience a lot especially on the iPad where the larger resolution means more memory usage than the phones.
iOS 10 runs very nicely.
I need to get a stylus for it, am open to any suggestions in addition to the ones mentioned in this thread
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OP, I would go with th mini 4 unless you intend on selling your old Air and replacing that with the Air 2
The air 2 is the more powerful device, and will last you a very long time.
But the mini 4 will also be a bit of an improvement over the air especially with using safari and accessing multitasking due to the 2GB of ram...to me that is the biggest reason to upgrade from an Air....couldn't stand 1GB of ram on the iPad personally. Safari reloading constantly drove me insane on my old Air.
It's more portable but I don't think you can go wrong with either. please do read what everyone in the thread has to say prior to making up your mind
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Actually the Air 2 is more powerful than the mini 4, despite it being older
For anyone who picked up an air 2, talk about value for an iPad...came out fall 2014 and it's still going strong, runs great, and is a fantastic value for a tablet. If you picked on up in 2014 well 2 years later it's still a verysolid buy.
(compare that with the original iPad 3 which ran pretty bleh at launch and was replaced barely 6 months into its own cycle haha)