I held off until SP1 and made the Switch to Vista Home Prem 64 when I build new computer for myself. I have been quite happy. Very snappy system (E8400 at 3.6, 8g Ram).
Some old old games don't network (IPX).
Old DX2 Game won't run until I found patch
Everything works and I have it configured so it looks like Win98 Start Bar.
Lots more stable. Have not had one crash!
DM