I hated XP simply because of the look it had, and the fact that it didn't like my 9200 Pro's drivers

2kPro is my favorite OS of all time though. It just worked, and was fast on just about anything. If I wasn't tied down to a OEM license on this machine and/or could be arsed to set up a dualboot system up, then I would run it on here. I knew all the ins and outs of 2k, and its little niggley faults.
Tbh, I don't like 7 either. Or even Vista that much. Vista just suddenly goes slow after about a week's worth of use, and is a stupid OS. Like a niggle I have now is I have to triple-click stuff on my start menu, when before it was single click. It's the OS that breaks itself.

I think next time I reformat, I will have a dualboot 2000 Pro SP4/vista set up going.