Thanks for the responses. I went ahead and purchased the 5770. I should mention I wasn't planning on playing anything at that res... well maybe civ 4, but generally I stick to the monitors other native res of 1280x800. Regardless, its good to know that it will be somewhat of a step up.
I am still curious, how is the "image quality" on the 5770, is there any note worthy difference between it and my crispy 9800gtx? I remember this being an issue way back when the geforce 3 came out compared to the radeons of the time.