I ordered
this one. The same card at any of the big box stores nearby is $200.
My rig is an old socket A AMD XP2400+ (roughly 2GHz) on an Asus A7N8X-X mobo, 1GB PC2700 RAM, SB Live soundcard, and Skuzzy said this should be plenty of card (basically my CPU would be the bottleneck, and any bigger or more badassed card would probably not be worth the expense).
Granted, different PCs altogether, but I would think the same model of card would serve you well.
I wish I could comment on the improvement over the 6200 I have currently, but "Overnight shipping delivered by 3PM" apparently means "Whenever Fed Ex feels like delivering it".

Anyway, some other folks are using it; other than Hoarach having some Mobo/vid card compatibility issues, I don't recall seeing any complaints about it.