I agree with MoM on the XFX 6770, even cuts down on the price a bit.
If you were still under budget with that MSI at $150, then you could certainly afford to upgrade the graphics a bit.
MSI Hawk GTX 460
$125 with rebate.
XFX HD 6850
$130 with rebate.
Granted, you will be paying more up front before the rebate, so up to you if its worth it.
Please read through the thread thoroughly before responding.
Nobody wants to read a wall of text, formatting is your friend.
i5 3570k | 8GB G.Skill 1600MHz | R9 290 | SeaSonic 750X