I find it amusing how everyone hates ME for no apparent reason. Yes, I hate the faster boot time, better GUI colors, and better stability.
Personally, use either ME or 98SE, both will run fine. But ME has features that 98SE doesn't, I personally like it over 98SE.
If you primarily use your computer for gaming then there's no real reason to use Win2k. Unless you feel like rebooting to be able to play games well, which I doubt you do.
My $0.02