I just returned my iMac 27 Ultimate and would have ordered the upcoming iMac 27 SB Ultimate if not for all the problems I've read about recently with the iMacs - blurry smokey screen from overheating and dust inside the cabinet, clicking noisy HDD's (I ordered mine with a 256 SSD + 2 TB HDD internal) and also problems with dust in the fans - so if I was to buy an iMac I would of had to void the Apple Seal and remove the 27" glass and LED panel at least once a year - and since I pay a premium for an iMac compared to other alternatives I really don't think you should design a home based computer unit where changing the HDD and dusting off the interior is more complicated than in a MacBook pro laptop
But I know ; I know - 95% of all the iMac users don't even know what a HDD is and Apple sell lots and lots of iMacs to these kind of folks
But I know for sure, that the average iMac owner after a year would like to be able to dust the interior in the iMac clean from dust and also would like to be able to change the HDD if it has started to produce clicking noises - instead of having to lug a 27" monster to and from their home
I just purchased a 17" MacBook Pro Ultimate instead and an external ACD 27" along with a wireless Mac keyboard, a Magical Dusted TrackPad and the Magic Mouse - finally bought the Adobe Premium Package for Mac with a GREAT student discount (1/4 of the original price) - so I hope this will run well