IIRC, XP 64 didn't have a lot of drivers available for the most part. A lot of gaming peripherals, for instance.
Anyway, I subscribe to the "skip every 2nd version" camp. In other words Windows for Workgroups (3.11), 98, XP, Win7 are the ones I found best. 95, ME, Vista, Win8 all kinda suck, IMO, for various reasons. Not sure where NT and 2000 fit, but they weren't really on my radar for my home desktop.
I truly cannot stand the Metro interface. Why would I want a touch-screen interface on my desktop? It just gets in the way.