win2k for sure especially for more of the power users. its a solid server and workstation. XP's driver compatability is nice, but chock full of annoying "wizards" i find xp to be kind of wussy compaired to 2k in that respect. they dummy down a ton of things.. especially in XP home.

I like XP for a workstation, pretty,and simple. I enjoy the kernel based driver system for devices in xp ..its much nicer, but you get some things you don't really want or have a choice in deciding sometimes as far as drivers go. I love its camera file transfer utility thing.. its much easier to use then the third party ones that came with my camera that i have to use in 2k.

2k seems to be more rock solid as both server and workstation. You have to specify the drivers and it doesn't find nearly as much as xp, but once you do there is hardly any issue with them, i've only had a few probs with my camera drivers in 2k...(partly because the manufacturer stopped making drivers >: ( )