I have read all the posts and reviews saying the 24inch is far better than the 20inch, for a multitude of reasons. I am a student, and I can get a 24inch iMac from the Education store with everything I want (printer, applecare etc) for £1212 - on top of that I'd need to add MS Office 2008 and a decent external HDD. I can get the 20inch iMac for £850, then I'd need to add all of the extras on (excluding external HDD) - it would only come to about £1000 (or thereabouts). Is this worth it, or should I just go for the 24inch. Does anyone have experience with both? My iMac would be used for all my school work, watching DVDs and online movies. Some video editing would occur, and work with photos. Thanks for any replies.