Just a word of advice . . . I bought the 27" iMac and transferred my PowerMac G5 files via a Time Machine backup. All of my CS3 apps stopped working due to "Licensing for this product has stopped working." I called Adobe, and they told me this is a known 10.6 issue when transferring files from a Time Machine backup. They had me try several solutions without any luck. I was so frustrated, that I had to reactivate my CS3 on my PowerMac in order to get some work done. I used to transfer my files via Target Disk mode, but this new iMac no longer has a FW400 port. Now, my next option is to buy a $10 FW400-to-FW800 cable. What a waste of three hours . . . (sigh).