For those of you who do not know Windows 7 yet, those who doubt about its virtues and even those who have already installed the Release Candidate and want to find out more, I recommend a lot that you watch a series of videos (in Spanish) about its goodness:
Usually I'm not a developer that installs testing versions of a OS in a production environment, but, when Windows 7 RC version was out and having witnessed that the previous beta version worked with roominess in "aged" notebooks, I decided to walk away from Windows Vista and give Windows 7 a try.
I must confess that, after I took that decision, results have been quite comforting! Windows 7 RC behaves like a charm and performs superiorly to its ancestors.
I have installed its 64-bit version with only 2GB of memory on my PC desktop and it actually flies! (note: on Windows Vista, it is recommended that you have 4GB to achieve an acceptable output).
Not to mention the features of its own that make the UX indeed enjoyable.
Thus, as I said at the beginning, my advice is that you visit "Windows 7x7", watch the series of demo videos, and if you can, decide to finally install and try out Windows 7 RC.
> Link to Spanish version.