Been playing with a Pixel XL for a few days and like it very much. Not sure it's going to replace my iPhone 7+ though.
-- For starters, it only has 32 GB - the 7+ has 256 - and I'm a hoarder, so not sure I can change my stripes.
-- I disagree with the notion that the Pixel camera is better than the iPhone's, especially the lack of the optical zoom and no OIS. (Why the hell did they make the same mistake with OIS as they did with the previous Nexus?) The Pixel's does handle blue skies better, however. Easily. But there's very little noticeable difference otherwise.
-- I do think the Pixel operates faster than the 7+, which surprised me. It's really speedy, except for scrolling through web pages - iPhone still wins big there. I'm not a gamer, so can't compare that experience.
-- The big problem for me though is Bluetooth. It's a rock-solid experience on the 7+, it's been a hair-pulling, obscenity-forming experience on the XL. In the house and in the car. Was hoping the recent update would help solve, but nope.
-- Battery life is very similar between the two.
-- It was very courageous for Google to bring a headphone jack to the pixel.

(Thank you Google.)
-- This may seem like a very minor issue, but I LOVE the Apple Leather Case for iPhone. Love. It. I despise plastic and TPU cases. How hard can it be for somebody to replicate the Apple Leather Case for a Pixel XL? (Or regular Pixel.) Obvious not an EXACT replica, but close enough? Maybe somebody has, but I haven't found it. Feel free to link to me one if it exists.
I still have a few more days before the return period is up. I'm thinking the Pixel 2 will be a tremendous hardware upgrade from the first version and might just wait for it, but for a first generation phone, they did a pretty damn good job. Just fix the bluetooth and for God's sake OIS next time.