I have had the S7 Edge, S7, Note 7 and now the Pixel. Had the S6 Edge before that as well as an Honor 8 with its dual camera. Basically, I too have tried nearly every phone that's been out this year looking for the best camera as that's the most important thing to me too.
I never quite liked the S7 camera despite the reviews and ratings. What the reviews don't tell you is that the f 1.7 aperture means a very very narrow 'field of focus'. i.e., large parts of the same photo will be blurry / out of focus. I am not talking about depth of field, I am well aware of what that is and the implication of the f 1.7. Depth of field applies to macro shots. What I am talking about is different parts of photos being out of focus even for landscape shots or general everyday shots where the entire photo is expected to be in focus.
I got around this with my S7 era cameras by using pro mode and multi-AF with matrix metering. But pro mode cannot be set as default, so you had to launch the app and manually switch to pro mode each time.
Anyway, I like the Pixel camera a lot. I think an f 2.0 is a good spec for a camera phone. Anything higher than that comes with too many compromises. There has been a lot of advancement in 2016 in smartphone camers, but they are all around the 12 mp resolution. I'd like to see the same advancements (PDAF, LAF, dual pixel etc.) be made with higher resolution. You can only get so much detail from a 12 mp sensor...