TRios_Zen on 04 July 2009
I've been running the release candidate of Win 7 on both my laptop and desktop; it is stable, slick and packed with cool features.
I've had no trouble with drivers on either of my systems and have had no trouble with steam or any of my non-steam games on my desktop (don't game on my laptop).
All in all I'd heartily recommend this upgrade and have personally reserved two copies to replace the RC I'm running now.
