Hey guys! Going to be purchasing one of the shiny new iMac's when they're are launched, I currently have an early 2008 model but would like some more power and am excited for this ThunderBolt business! Why are the hard disk drives so massive on these things? I mean the current base model is a default of 500GB, does the average user really need much space and couldn't that make them cheaper by decreasing the size of the drives? I mean my iMac that I purchased in 2008 shipped with a 320GB drive, and it's more than enough... I'm only using 140GBs of it!