How fast does a BootCamp installation wake up from sleep?
I've used BootCamp with Windows XP and 7 installed on several models of MacBook and MacBook Pro over the last five or so years; in my totally unscientific experience, XP is considerably slower than Windows 7, which is an improvement but still not as fast as OS X.

You might want to refer to this SuperUser page which links to several different AppleCare discussions.