This is my first post on here, so hello everyone! Like many others i have a dilemma on which imac i should purchase! Its between getting the 21.5 inch imac 3.06GHz Intel Core 2 Duo, 1TB hard drive at £1,077.48 (education pricing) or the 27 inch imac with i5 processor at £1,438.20 (education pricing) I am a graphic design student coming to the end of my course and I will be installing cs3 or cs4 and be using illustrator, photoshop, indesign mostly. As well, as doing the usual everyday things like internet, itunes, etc. What i really want to know is will i really notice the difference when performing these tasks between the two different processors? or is the difference only really significant when doing more processor demanding tasks such as video editing, etc? Should i just purchase the 21.5 inch model now (which i can just afford just now) or will i come to regret it? The answer seems logical to purchase the 27 inch, but it is the price difference between the two models which is my stumbling block! It has taken me all my time to save up to where i am now. i am currently using a 3.5 year old packard bell PC with 1.86Ghz Intel core 2 Duo and 1gb ram. Which tbh is becoming a pain the arse as it freezes often when i am doing work on it. Im thinking purchasing any of the two imacs will be a significant improvement but i just want to make sure i am getting the right one as it is such a substantial financial outlay for myself! if you can help me decide, thanks! as i have been thinking about this for too long!