As a 2016 P series owner I very intrigued by the P Quantum more so than the X. I think a lot of it comes down to brightness. While not the brightest in the world, my current P Series can get fairly bright in scenes for what i watch and I imagine the PQX will be insanely bright, especially if you watch in a darker lighting. As such the P Quantum seems to be a nice sweet spot. I just really wish Vizio would innovate in their processors. I'd wager that they are the same as the ones in my 2016 unit. Also, I think Vizio should abandon their proprietary smart cast OS and just move to Android TV or license Roku OS.