Actually, in the company I work for, we're working with Windows 7. Initial reports say it's very good. Much better than Vista was (which we promptly booted out the door). I haven't actually laid hands on it myself as yet but I'm scheduled to in the very near future.
Of course, that doesn't answer the question. As I'm sure everyone knows, I'm a Mac bigot. Can't help it. I've worked in technology since 1969 and never found anything that works better. However, I do know that's not the way a lot of world is today. So... if it were me, here's what I'd do.
Get a mac. Snow Leopard, while not providing many outward improvements over Leopard, does have hundreds of improvement and performance tweaks in it. Then, using a combination of Bootcamp and Parallels or VMWare, I'd load another disk partition with Windows 7 when it's released. Same concept as I've currently got with my Mac and Windows XP. That way, I get the best of both worlds and can "render unto Caesar that which is Caesar's"
Just my two cents.
Tom (
... still a Mac bigot.... umm... evangelist)