I believe this has been considered before so please forgive me. I am looking to make the switch finally and am wondering what configuration to buy. 14" Ibook with superdrive, and later a 17" iMac with superdrive, or wait and buy a single 15" Powerbook with superdrive? Me, I plan on doing some moderate photoshop with larger files, some lite video editing, lite sound editing, office stuff, taxes, accounting and some gaming. I need a portable though. I have 2 kids, who would love a nice video game machine. They beg for an Xbox, but i am not as excited about one. I figured the Ibook would do for mobile needs and even do some heavy lifting, and the Imac would be good for the serious stuff down the road. Suggestions????