I've had a pretty positive experience with my 6P, but there are 3 reasons I'm leaning toward switching to a Pixel XL now that the reviews are out for the Pixels and are overwhelmingly great:
1) BT performance on my 6P is terrible and is getting really frustrating. It seems like about 50% of the time I get in the car I need to toggle it on and off again to get it to connect correctly. I even factory reset it, but it didn't fix the issues.
2) The camera, while it takes great shots, is frustratingly slow. I have a 2 year old, and I'm ending up with a lot of blurry photos because of how long it takes for the camera to focus and capture the shot.
3) Since the Nougat update, my battery's been draining about twice as fast as it used to (and yes, I did a factory reset). On weekdays it's not a big deal, since I charge it in my car, but on weekends I'm always running low by the end of the day.