Hi everyone, I'm going to buy an iMac with either the GT 130 video card or the ATI 4850. Which should I go with if I primarily plan to use my iMac to play World of Warcraft, use Photoshop CS4 and play War Hammer Online? Would the GT 130 play WoW exceptionally well? Is the 4850 overkill? I've spent an hour reading what others had to say in the past but I'm still uncertain. Which should I choose? Thanks for your time!