I plan on buying a mac pro tomorrow, and I'd like to know what would be best video card setup to run my two 24" monitors (1920x1200 each). Would it be better for me to get 2x 7300 GT's (one powering each monitor) or one X1900 XT? I don't plan on gaming at all - I'm a graphic designer and mainly use Photoshop and Flash. I just want the smoothest experience possible. Thanks in advance!