Hi, I currently have the first gen alu iMac, 24 inch core 2 duo 2.8ghz extreme bought oct 07. I can get said 27" iMac from refurb for around 25% off which seems a pretty good deal even though its about a year old. I just have a couple of questions: 1) Is there much difference between 2.66 quad i5 and the latest model? It looks just like a speed/gfx bump. 2) Since its already a year old, is there going to be a new design any time soon? I don't mind another speed bump but I'd be a little annoyed if I bought this and a revamped iMac came just around the corner. 3) In which case...should I wait or get the refurb? thanks!