Pros: Fast, gorgeous, great size
Cons: A little too thin, battery life could be better, easy to damage
I am an original iPhone adopter; I had the iPhone 1, 3G, 3GS, and 4. After the 4 (which I loved) I decided to run with Android for a bit. I owned a Motorola Atrix, Nexus 4, and Galaxy Note 3 (and tried a Galaxy S4 and S5 for a while). Of all my Android phones I loved the Galaxy Note 3 the best. It was fast, sleek, great battery life, and very open.
That said, I was very interested to try out a larger iPhone. I felt the 5.5" Note 3 was a bit too big so I opted for the regular 4.7" iPhone 6. It feels truly fantastic. The aluminum body feels sleek and is like a throwback to the original iPhone design. I do feel it's a bit too thin though. I'm not even concerned about bending, I just feel like it will be easy to drop, so I'm going to be sure to get a case that adds some bulk to it. It also does get a bit warm after extended use, but your battery life will be a bigger concern at that point.
Battery is good, but I wish it was a little better. With normal usage I end the day at about 35%; if I forgot to charge at night I'd probably have about 25% remaining. Maybe that will improve as I stop using it so much, but for now it's decent. I don't think I have to worry about not getting through an entire day.
I do not love that the camera bulges, but it is something I lived with on my Note 3 and after my case arrives it will be flush anyway. The camera quality, though, is quite impressive. The pictures it takes are about the same quality as the best pictures I could get with my Note 3, but it takes great pictures much more easily. The slow-motion 240fps video is also an insanely awesome feature.
The screen is nice; the colors are vivid without being overly saturated. I see a bit of backlight bleed when it's completely black, but it's not too bad. At first I was disappointed that it wouldn't have a full HD displayed, but I can't really see a difference in quality between my 1080P 5.5" Note 3 screen so I'm happy with it.