Right now I'm dual booting Win2K and Win98SE.
Win2K w SP2 is a dreamy operating system smooth as glass, so far I've not run into any problems at all and the games I've been able to run, which are mostly my newer games run solidly smooth and fast, I haven't really noticed a speed difference in the games at all, however I installed it as fully NTSF file system not FAT32. I'm running my Win98SE on a seperate hardrive mainly because I've got older games I'm not ready to part with, that will not run on Win2K running the NTSF file system. Most of the problems people are facing with Win2K, are arising from trying to hang on to what they think is the best of both worlds, by formatting the Win2K installation as FAT32 which is possible but full of problems. Win2K has a third service pack out now to correct the bugs that reared their ugly heads, but WinXP is still deep in the buggy stages and right now the world is the testing ground, I personally decided to go with a tested and fully tried operating system and let the others be the guinea pigs, I have not run WinXP, because of the problems one of my friends has had with his, however after its been out for a couple of years like Win2K, and has service packs available I'll give it a try. I know you were asking for a comparison directly between 2K and XP, but when I saw you were running 98SE, it reminded me of when I had to make the same decisions you're fixing to make, so I figured this info might help out some. Ryan