Windows XP, the XP stands for experience unlike any other in the proverbial sense. It is my opinion too colorful, too expensive and too slow! The logon scripts are an abomination. There crashes even under heavy (simulated) conditions hardly and it supports just about any hardware that I've tested. Even software, especially games run better now. All in all, I think a good system, but I find Windows 2000 persönlcih pleasant !!