Upgrading to XFX Radeon HD 6790

So I am currently using a Radeon HD 2600 video card that I have had for a while. My systems not the best, but its really starting to struggle playing games (mostly I play Star Wars: The Old Republic at 15-20 fps). Did some research today and the Radeon HD 6790 looked to be my best bang for the buck in my price range ($150). I just want to make sure its the best one to go with before I pull the trigger.

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APPROXIMATE PURCHASE DATE: This weekend

BUDGET RANGE: $150

USAGE FROM MOST TO LEAST IMPORTANT: Gaming (SWTOR and Diablo 3 in the future)

CURRENT GPU AND POWER SUPPLY: ATI Radeon HD 2600 Pro and Antec True Power Trio 650w

OTHER RELEVANT SYSTEM SPECS: Intel Core2 Duo E8400 3GHz, MSI P43 Neo3, 4GB RAM

PREFERRED WEBSITE(S) FOR PARTS: newegg.com but am trying to purchase at Fry's Electronics

COUNTRY OF ORIGIN: US

PARTS PREFERENCES: None

OVERCLOCKING: No

SLI OR CROSSFIRE: Maybe

MONITOR RESOLUTION: Dual 1920x1080

ADDITIONAL COMMENTS: Running dual monitors, so would prefer 2x DVI ports