Interesting that you say that you prefer XP for coding. I've found that it's easier to use an RO machine. Developing a perl/cgi script get an 'error x at line 456' deskedit/stronged/edit/(and zap?) press f5 enter 456, go straight to line. Wordpad? Notepad? Not a chance.
Writing technical documents in word2000 vs easiwriter: for 99% of cases ew wins hands down every time.
Photodesk vs photoshop : easi interface but ssllooww vs Complex even confusing interface, but incredibly fast. You takes your pick on this one!