There's a coupon code for that 5830 to get it down to $99.99: http://www.tomshardware.com/forum/101722-8-radeon-5830-newegg
It's actually the best bang for your buck out there now, but it's a bit underpowered. It's still worth it though if you intend to crossfire later this year. Two of these in Crossfire should best GTX 570/Radeon 6970 performance for under $200 total (assumed since two GTX 460's handily trump a GTX 480, which is more or less a GTX 570's equal).
EDIT: I'd also consider the $190 (after $40 rebate) Galaxy GTX 560Ti on Newegg.