Recommended GPU(s) for these components

[TheIrishguy92]

Hello,
I'm currently building my first gaming rig. So far ive purchased the following parts:

Mobo: Z77 Extreme 4
CPU: i5-3570k processor
ram: Corstair Vengeance 8gb 2133mhz
case: HAF 922

Because im so new to all this, i would appreciate any recomendations for a GPU that would work well with the above, and in the price range of about 200-250$

 

[aaab]

What PSU do you have?

 

[redeemer]

What resolution will you be gaming at?