I need help, I have the old G5 Mac pro 1.8 tower. I got it when the G5's first game out. I wanted to upgrade to a new desktop. I want to know which one should I get, the new Mac mini or stay with the towers. Also which Mac mini should I get or tower. What is the speed difference in between my Mac pro 1.8 single processor and the new basic mac mini and basic mac pro tower. I use it for Photoshop, Itunes, Editing RAW photos and learning final cut pro. Thanks for any help....