im not impressed with the imac update very much, i have a few reasons 1.there's no USB 3.0 ,i know its not really a big deal yet, but macs are supposed to be top of the line and ahead of everything else so why not just put one for future development? 2.no change in the video input process, apple didn't add any kind of video resolution scaler so to input video from a non display-port device requires expensive adapters still.(pandering to MBP users again) 3. no HDMI input-simple enough (see above) 4. limited audio functionality.i have a very high end stereo system and i would like to at least use it with my imac sometimes without using a headphone jack!.its way to limited.most pcs have a super audio port or at least something equivalent. now the speed boost though not very impressive is nice ,and im sure would be good for graphic designers and people using memory intensive programs but is it enoguh to make me want to buy a new imac? im very happy with my imac ive never had any lag with it and no problems at all.i think i will probably update in 2 to 3 years when the specs on the imac are enough t make me want to buy opinions?