I'm on the verge of buying a new G5 (2ghz dual processor). The 1st machine has an 8x superdrive and the 2nd has a 16x. Obviously the 16x would be better---BUT the 1st one has 8 dimm slots that allow for 8gb ram...and the 2nd only has 4 dimmm slots (expandable to 4GB ram). I wonder if anyone has any advice on which way to go? PS-the primary use for my computer is for graphic design, especially Photoshop.