I'll add some thoughts after 24h of use (which I know, is not very much)...
That display! So good. I was on an iPhone SE before, which has a nice display, I think. Vibrant, no air gap, good pop... and the iPhone 7 blows it out of the water!
Build quality on my unit is top notch. I've always been one to scrutinize new devices and though I'm trying not to do that this time, I can't help but notice there is no backlight bleed or 'spotlighting,' I see even colors all the way through, the body of the phone (matte black, not jet) is perfect... Just a lovely experience.
There will always be complainers (and often I am one of them) but for now I can say I straight-up love my iPhone 7!