I'm looking at buying a Mac system. At the moment I have a PC with a 2.4GHz Pentium 4 (with hyperthreading) and 2GB of RAM. Would the '09 3.06GHz w/ 4GB RAM (and Radeon 4850) be enough? Apps currently used: Photoshop CS4, Illustrator CS4, InDesign CS4, Dreamweaver CS4. I don't have the money for a mac pro at the moment, and the mentioned iMac seems like the next best option. I'm not sure if 8GB of RAM upgrade would be necessary since from what I hear the Mac's PS CS4 doesn't support over 4GB of RAM.