I currently have a first generation Mac mini (1.42 GHz) and I tried the trial verision of World of Warcraft. Needless to say that I got hook on the game, but I notice some lag with my mini, that's cause I only have 512 RAM. I'm thinking of waitng until the release of the new iMacs. Are the current iMac's good to play WoW on? Are they more upgradable then Mac minis? Do they have better video cards?