I have this monitor, bought it refurbed last year for $350, and it's very good. Color is wonderful, contrast is great, it simply has a gorgeous picture. It's plenty fast enough for any game, despite opinions to the contrary. I use it for FPS play and it's been fine.
My only gripe is the complete lack of OSD and controls, aside from brightness. However, if you have AMD Catalyst, or any other similar video card calibration software, you don't really need those. I ended up buying a ColorVision Spyder2 express off ebay for $50. Well worth it, IMO.
Overall, this is an amazing buy for $300.