Yeah, but Microsoft just lowered the prices on Vista, to encourage users to upgrade.
All in all, Windows 2000 was great and for a few people still works. My current laptop has had XP PRO and it only BSOD'd once and that was really my fault. It has been very stable with everything I have installed and uninstalled.
I don't get Vista. I have two clients running Vista, one wants to go back to XP, the other loves it. It really don't like the damn security checks - YES, I WANT TO INSTALL THE PROGRAM!!!