I witnessed my girlfriend's Nexus 6p support experience with Google and it was not pretty. I would never buy a Google phone after that. The phone, just barely out of warranty, goes into a bootloop and becomes a paperweight. Google helpfully shrugs the problem off on Huawei, and Huawei will of course not support the product since it's out of warranty. There is no repair option. I tried Android early on, had similarly…
The iPhone 3G is the worst purchase I ever made, a month after buying it iOS 4 turned it into a barely functoinal brick with no ability to roll back the OS.
I've also had an HTC Amaze which was great, a Note 3 which was great, a Nexus 5 which was OK, etc...
No company always gets it right, even Apple. That being said, the Pixel XL was great, so I'll guess that this new one will be good too. Nexus 6p was a dud, Huawei doesn't make them anymore, Google re-branded and moved on...