Happy iPhone 6 user
I received my iPhone 6 the first day they came out, and I can say I have been extremely happy with it.
A lot of people will complain about its size, but I don't see the reasoning. I'm a 6ft male, 180lbs, possibly above average hand size (but I don't know what average is with hands). I wear slightly tight jeans, a little bit looser khakis but still tightish, dress clothes that fit properly, athletic clothes, jackets, hoodies, so basically all types of clothing, and I have never had an issue sitting, standing, moving or doing any activity with my iPhone 6.
It fits perfectly in my pocket no matter which pants I wear (I keep my phone in my front right pocket). I can easily sit down and it not be uncomfortable, or even noticeable for that matter.
I often use it with 1 hand, but type with two. However, I have always typed with 2 hands on any phone I have owned. Browsing is all one hand. I take pictures with one hand. Make calls, check emails, play most games, pretty much everything one handed. I can easily reach every corner of my phone without issue.
I can understand hesitations about getting a larger phone. But as many people have said, you adapt. Yeah, I think I hold it different than I did my 5, but now it feels normal.
Every time I pick up a 5/5s I am baffled by how small it feels. It's not even that much smaller, I know this, but it feels tiny. The size of the 6 is perfect for me, and I think it's perfect for a lot of people. 10 minutes in a store isn't enough to convince you it's the right size. That being said, after the first day I had it, I knew I'd never go back.
Hope this helps.