My 2p's worth....

upgrade - No:O
switch - No:O
stay with Xp - Yes:D
Why Not - No compelling reason too!Perplexed, it's a bit like the 'Emporers New Clothes', alot of  noise and parading around but actually nothing we haven't seen or heard before!Perplexed.

As for Office 2007 well that's in a totally different league (except Outlook 2007). IMHO:P