With the Radeon HD 5830 and GeForce GTX 460 768MB now both selling for $200, choosing between the two isn't necessarily easy. I'd probably favor a nice GTX 460 768MB like this Asus model, since the card has a quiet stock cooler and slightly better overall performance than the Radeon.
When you consider that Newegg is offering HIS's Radeon HD 5830 for just $179.99 with free shipping, however, the choice becomes trickier. Normally sold for $199.99, that card is available at a discount until July 31 if you enter the promo code "VGA14327" on the checkout page. That might just be enough to tip the odds in AMD's favor for someone hunting for bargains in this price range.
This particular flavor of the Radeon HD 5830 has a full gig of RAM, a big cooler with a large fan, and DisplayPort, HDMI, and dual DVI connectivity. HIS also offers two years of warranty coverage. For a detailed comparison of the GeForce GTX 460 and Radeon HD 5830, be sure to check out our review.