I came from a Pixel 3XL. It's been working pretty much flawlessly for 2 years, but I was filling up the memory, so i decided to upgrade. For the P6P, the first issue I have is the fingerprint sensor. It was much better on the 3XL and my OG Pixel XL, and the rear location was definitely my preference. I've scanned multiple versions of my fingerprints, and sometimes it is stubborn.
Worse than that, is my bluetooth connectivity in the car. I actually make calls when I drive, and I live in a hands-free state, so this is of high importance to me. If I just drive someplace and don't make a call, my phone stays connected to the car the whole time. If I make a call, a minute or 2 into the call, it disconnects from the car, and I have to go to hand held. This is extremely frustrating, and I'm hoping the update next week fixes this, or I'll be contacting Google for a new phone.
I was totally used to the two button navigation that was on my 3XL with Android 12, and the fact that this phone doesn't offer it makes no sense. Their gesture mode was not great, so I'm using the 3 button option, which so far is fine.
I need to spend more time with the camera, but so far, I'm liking it. In general, I'm happy with the phone, just need a few bugs worked out for it be closer to perfect.