I'm fixing to order an iMac and can't decide wich CPU to get, the 2.8 or the 2.4. I'm going to be using it for web browsing, office tasks, iTunes and iPod, and some iPhoto. Of course I'm going to get the 24". I will probably install Win XP because I have some older games I still like to play and some newer RTS's, like Grand Prix Legends, GTR2, GT Legends, Company of Heroes, etc. I am going to get 4gb RAM elsewhere. Any opinions?