Go with 7 unless you need to copy files over a vpn. I keep xp running in a vm since I need to copy files over the network a lot.
Microsoft keeps saying it’s not a problem, but I’ve had the problem since early Vista and it’s still there in 7 (and many other people have it too). And it’s not a small problem like 30 seconds vs 40 seconds. It’s 30 SECONDS on xp vs 25 MINUTES on 7. I’ve tried every “solution” I can find but none help.
Other than that 7 is nicer and faster.
That was one thing that ticked me off about Microsoft. In Windows XP there was a built in VPN client in the Home version (the version which comes pre-installed on a new machine). From Vista on you have to buy the Professional or Ultimate version to get a windows VPN client. That was low. I know you can download other vpn software but it was just a petty example of MS nickle-diming their customers just because they can.