Although I am primarily a Mac user I have a Dell netbook and an older Dell laptop. The laptop had Vista and was acting up (freezing on boot up) so I installed Windows 7 on it yesterday.
So far so good. Windows 7 is quite fast and does seem "Mac like". I found it odd that Microsoft decided to not include mail and photo programs with 7. I just installed Thunderbird for e-mail and Picasa for photos.