Anyone out there have experience with one of these? I'm working on the current eMac currently (1.25 G4) and am seriously thinking of trading up to the 20-inch iMac. Playing mostly BF1942, Railroad Tycoon 3, C&C Generals. There playable on the eMac, but I hope that bumping up to an G5 iMac would make a appreciable difference. I know nothing about video cards, so I don't know if there is an edge there between the two.