Any advice greatly appreciated. I've currently got a 2009 2.66 Intel core 2 Duo. It's been fine for most work (I'm an illustrator), but there are two huge problems with it. 1. It can't multitask like my old dual 2 GHz G5 Power Mac could. There is a definite, and very annoying, waiting period when switching between programs. 2. It's running into severe slowdown with multilayer photo shop files. Specifically ones that have layer masks. I typically have the following programs open all the time: Photo Shop, Nuance Dictate, Chrome, Mail, Bridge. I also use Corel Painter and Manga Studio Pro, (but generally have to close some of the other things down first). As my photo shop files approach the 650 MB size, and have 10 to 15 layers that have layer masks on them, everything starts to slow down dramatically. The screen redraw becomes fuzzy, and we get a lot of beachball activity. Is there any iMac I can buy where I won't run into these problems? I can't afford a Mac pro. Many thanks in advance.