We've had these towers since the G5 era...they are big as refrigerators. Many (many) in the mac community have been hoping for a smaller, streamlined tower for a long time. You remember the old PowerMac 9500 with SIX PCI slots -- even that tower wasn't nearly as big at the Mac Pro tower. THe major advantage to the Mac Pro tower size it's ability to hold 4 internal drives. I am sorry, but I think the tower is just a bulky monster of metal and it's just way too big and way too heavy. Some might like that, but personally I think it's time to size down to something more liftable with less impact on the deskspace (or space below). Maybe when Apple replaces HD technology with SSD we will see the sizes of the tower shrink. The current Xeons with the heatsinks take up quite a bit of space as well. The tower is simply a mammoth of aluminum, and it's heavy. Really heavy. Sorry if this post sounds like a pointless vent, but I felt like it was an issue worth addressing.