The 7850 is really a great card, however i have seen 6950's with free games around $200. A 7770 or 6850 might be better for you though. You haven't given us much info.
What is your resolution? what games do you want to play? and at what settings? How much money do you have/want to spend?
FYI... using all caps is considered yelling, rude, and turns people off answering. Also your PSU is pretty horrible. Although its probably fine for what you are running.