I would go Pixel, that way you get the security updates the instant they come out, first Monday of the month. Sammy is usually 2 months behind, plus you for sure get the newest OS's from Google for at least two years. That is usually not true of the other manufacturers, it's a crap shoot. Camera on the Pixel's kill everything else now, including the Sammy's and the iPhones.
Plus you can root it and block the shitty ads and trackers that @Casper uses here.