Agreed but with a few more points. You cannot just bounce from XP to 7. You have to take a few more steps in order to do it. I'm not positive but I'm sure it's the same for 8.
Aside from that I would go for 7 instead. It's more of a stable platform because if there is a problem you can find a hit using google. Plus like said before always wait until SP1 comes out on any OP. Remember Vista?