I've been testing this Win 7 RC1 and don't understand what's all the fuss about it. Well, maybe it is better than Vista, apparently it requires less resources. But this is because Vista is a pig, demanding a lot of resources just to be there doing nothing meaningful. Comparing it with XP, it's not faster at all. Neither starting nor shutting down.
With Win 7, what I get, are those fuzzy fonts, somewhat hard on the eye. With XP I use Powertoys, disable that stupid "Cleartype" thingy, which, for me, gives more trouble than it helps, and I get crystal clear fonts, very pleasing on the eye. Win 7 incorporates the "Cleartype" deactivation thing but it doesn't work properly or completely. I also deactivate the Display option to "smooth edges of onscreen fonts" (another stupid and counterproductive feature) and things get better. However there's still a lot of things which keep on using it, OS gadgets, tools, etc. The default font, Segoe UI, also doesn't appear to like being used that way, it looks ugly. I change it to Tahoma and Trebuchet MS and things do improve.
But this is all very hard to deal with, if I change the display theme some of these things revert to default values, there's again more fuzzy fonts, etc. A PITA. If the most important thing for me, display quality, is hard to deal with or doesn't function as expected and is worse than XP, what good will Win 7 be for me? Useless.