Here my 2 cents (opinion)...
I had the 6 for 8 days. It is the perfect size when it comes to carrying, and handling. You can one-hand type if that is your thing, and it feels very natural in your hand. You are able to focus 100% on what you are doing, without worrying about dropping the phone, or making adjustments while you type and read.
I have an astigmatism, but could read most things just fine with the 6. The main exception was web browsing. Some sites were very readable, and with others, I had to spend a lot of time adjusting the size.
Viewing pictures, was ok, but not great. Youtube videos were ok, but I couldn't watch them for long. I keep moving closer to make the image bigger. Of course, you can only get so close.
Also, I kept rotating the screen thinking I would get landscape mode. Most of the time, the 6 wouldn't do it. The plus goes into landscape mode for more things of course.
In short, I thought the 6 was perfect from a handling/carrying perspective, but I wanted a larger screen for some things.
So, last night I scored a 6 Plus at the Apple store. I am still getting used to it, but here are my early thoughts...
It isn't much bigger, but it is an adjustment both carrying, and handling. When I put it in my front pocket, the phone is more noticeable when I walk. Holding the phone isn't as natural yet. I am still adjusting my grip a lot. I think I will get used to this soon.
For me, one handed typing is off the table with the 6 Plus. Even with the Reachability feature. one-handed use is difficult. Fortunately for me, even with the 4" screens, I usually used 2 hands.
This phone is much easier to read. Safari is very readable now, and youtube videos are easier to see. As I don't have 20-20 vision these days, the 6 plus screen is a very nice improvement. Typing is easier too. For those of us that fat-finger the stock keyboard, the bigger keyboard is nice.
Also, the battery life is noticeably better. I saw a good improvement going from the iphone 5, to the 6. Going to the 6 plus is another notch up.
In short, the 6 plus is great from a reading/typing point of view. The screen size is fantastic and makes using the phone more enjoyable, for me. It handles less naturally than the 6, IMO, but it isn't bad. You will notice the handling difference in the beginning though.
If you have good eyes, and don't need the extra battery time, the iphone 6 is fantastic. It is quick and easy to use. It's easy to carry, hold, and one-hand type. The 6 plus is a little harder to manage, but many folks will love the bigger screen. I found it noticeably easier to read.
For me, the bigger screen is worth the handling trade-offs. The OP and others will need to decide which trade-offs they prefer. There's no wrong answer, it is a matter of finding the right fit. I hope this info helps some folk sin their decision.
