The only downside is that the key board is different. There is a column to the left of tab, caps lock, shift, control. So that I tend to hit caps lock instead of "a" - and when I go for "control c" I get a calculator. LOL. must retrain my fingers to not reach so far.
So far Windows 7 is intuitive- although I'm still trying to figure out how to do the cool snappy thing that lets you see two documents side by side. If you work in Mac, you've been able to do this a long time. Anyway- that's my experience so far. Cheers~