[citation][nom]hellwig[/nom]I had to stick with ME but only because it came on my new computer, and I didn't have any install media to switch backwards. However, I also stuck with ME even after XP came out just because I didn't want to update my computer to a new OS, nor spend the $200 on an upgrade version. I guess it just depends on why you need to upgrade, for me the issue was eventually new hardware unsupported under ME. I assume that eventually MS will stop supporting Win 2003 (Xp Pro x64) and I'll have to move up.[/citation] http://support.microsoft.com/lifecycle/?p1=3198
According to this the mainstream support will cease 2 years after Service pack 3 for win 2003 64bit. However, there'll probably be another 18 months of extended support (security fixes) after that.