I would still be using NT 5.1 if I could.
XP was solid, as is W7.
Unless you're updating your hardware, why task older hardware with all the shiat included in each OS upgrade?
W8? Fark that. Maybe if I upgrade my hardware in 18 months AND those damn for-tablet buttons can be disabled. The front ends look worse than a 70 y/o strippers rack.
Apple products are for sheep who relish the privilege of paying 3x too much.