Just so you know im not a Mac guy. Im a PC (sorry). But my GF uses Mac at home and work, always has. She wants to get a new iMac so we went to Apple to check it out. She doesn't know which way to go so i figured id ask you all here for your opinion. She uses it for graphic design, that's her job. I cant really help her much here since i know nothing about Mac. Shes pretty sure she wants to go with the 27" but that's it. She doesn't know if she should get the 3.2GHz Intel Core i3 or the 2.8GHz Intel Core i5. Probably sounds like a silly question but I have read some things on line and some have said the is is actually better. So i have no idea. Your thoughts?