Yeah, the Sapphire 5830s have been nice.
$110 shipped.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102878I usually have them running cool at 966/300, stock voltage (~310 Mhash/s). If I bump the voltage a bit, they do 1050/300, but they start to get really warm unless I kick the fan way up (and anything over 50% is loud). That's good for almost 330 Mhash/s under Windows 7, though!