I used the OP3 for 4 months before using the Pixel xl for 2 weeks now. I wanted to share some comparisons between the two for you guys. Screen.. Pixel but not by a huge margin though. It's nice to have Qhd but really with naked eye I don't see huge difference but enough to give pixel the win. Battery... OP3 and this is tricky. I'm a heavy user and run 3 businesses on my phone so no phone makes it through a day but the OP3 quick charge is far superior so the Pixel may make it little longer but I spend less time charging total with the OP3. Camera... Pixel but not by huge margin. The speed of camera is how it wins but it's not a knockout. It's definitely better in most conditions the the OP3. Smoothness. Pixel but again not a knockout but definitely a small difference. Build.... Tie... Both are constructed great I prefer the look of the Pixel but could be cause it's my shiny new toy. Price.... Well you know... In conclusion I love the Pixel but I think it's because of my nerdom I like having the "Google" phone and assistant is cool even if I have to for e myself to use it which will be better when my Google home gets here. If I needed a great phone and wasn't and wasn't the ridiculous person I am and wanting the latest and greatest I can't find many arguments to not get the OP3. You can't go wrong with either but unless you want the "Google" phone the OP3 is just as good in most categories and half the price. But I don't regret my Pixel at all though.