i think you should get GTX280 its cheap as dirt now.. and it trumps 5770 in every single game. not to mention its futureproof compared to 5770.
and did i mention Nvidia drivers are better than ATI´s? newer games always run smoother on Nvidias cards
Give us the links for GTX280 prices as dirt like you mentioned above...
newer games run smoother on Nvidia's card? what games? what cards?