You answered your own question. Do you want to play games or look at games ? if you want to play games and prefer nintendo games, you'll buy a switch. If you naturally prefer the ps4 library go for it. Once you're playing uncharted 4, you'll not be wondering how it would have been on xbone x, because you couldn't have played it.
if power is the only thing that matters to you, just save a whole lot more and play on pc with an ssd, a 1080 and a good cpu, and loads of ram. It'll blow away both ps4 pro and xbone x, but you'll still can't play uncharted 4, persona 5, or whatever xbone exclusive there is.