I'll second what others have said. I bought this phone for the form factor, and I wasn't disappointed. The first thing I thought when I opened the box and picked upt he phone was "this feels nice". It seems silly, but you spend a lot of time holding your phone, and it matters quite a bit to the overall user experience if it feels nice in the hand, and fits in pockets.
I agree that the radios are very good, which also matters quite a lot to me. (YMMV). I am disappointed with the battery life -- but if this is that much better than the leading competion, I guess I'm glad to have it. Honestly, the "always listening" and "active notifications" are gimmicks to me, like the customized colors. Sure, they are nice. But I usually end up needing to touch the phone to use it despite it's listening (I am much more likely to want to navigate to a friend's house than to someplace google can search for, and it doesn't do that) and I don't get a lot of mileage out of the active notification. I wear a watch. Maybe if my phone were my watch I would like it more.
Still, it's a nice package, it is very responsive, the screen looks nice enough (although not as gorgeous as the big flagships) and it is generally pleasant and convenient to use.