I didn't have a specific brand in mind. I just checked newegg.
The ATI 9800 pro 128mb is $136 with an average rating of 5.
PNY 6600gt 128mb is $129 after rebate (avg rating 4)
eVGA 6600gt 128mb is $144 after rebate (avg rating 5)
AOpen 6600gt is $145 (no rating)
XFX 6600gt is $146 (avg rating 5)
Chaintech 6600gt is $147 (avg rating 4)
also, some 6800's
Leadtek 6800LE $129 (avg rating 5) not sure if I want to risk not being able to unlock it in my nephews system but I may try this to upgrade my 9800 pro
XFX 6800 $142 after rebate (avg rating 4)
These are all in the price range I am looking at. I have only installed 2 video cards in my systems since my old voodoo 3 and they were both ATI. I dont know anything about the other brands. If someone could point me to a web site that compares the different brands that would be cool.