Is there a difference between the 9800 PRO 128MB and the 256MB flavors? ATI's site lists the 128MB as a "current" card and the 256MB as an "existing" card. Does the 128MB version have any advantages over the 256MB? I can actually find the 256MB card for less than the 128MB. I don't do any gaming, so that doesn't matter to me, but if I'm going to spend $200+ on a video card, I'd like it to be the latest of the series.