I'm gonna go with Xubuntu soon + some kind of virtualization (Xen or VMware probably)...
I don't care much that I'll get less than native performance in Windows that way, it's the fully replicated/compatible OS environment I'm after...
If You didn't know, this means I can run a virtual "Windows computer" inside Linux

Then of course there's Wine as an option as well, but I need this *full* emulation.
And Xubuntu... it's Ubuntu but with Xfce for the desktop rather than Gnome or KDE (as in Kubuntu).
It's a lot leaner, and although my main machine can handle heavier desktops than that... I'm a bit of a performance freak
