Good day, I have the powerbook 15'' for about 1 year now and I love it. I am thinking of buying the powerMac also soon. I will start doing a lot of illustration mostly with Adobe Illustrator and Photoshop. Do you guys have any suggestion of what power mac should I get? I am leaning towards the Dual 2.3 GHz. Do you think it is worth it to shell out about 1000$ more to get the Quad 2.5GHz. Or should I just use my powerbook for now and wait for the Quad powermac to come down in prize? Thank you in advance for all your suggestion.