I have a dual boot, 2K Pro Sp3 and XP Pro CE Sp1. I'm still tweaking XP and trying to find drivers that work for my hardware. XP blue screens on me occasionally, and freezes sometimes too. I have no complaints with 2k. It runs rock solid on my box, runs all my software, and plays all but some of my very old dos games. XP looks nice and has some nice features but all that glitters is not gold. All that bloatware slows it down. After you turn off all the eye candy it looks just like 2k, but it's still not as stable. I plan to wait for another service pack or two before I switch.