I currently own the last generation 15'' Powerbook which I really enjoy and have had no problems with, but I will be needing some PC-only programs in a class next semester and rather than getting a really cheap PC, I'd like to get another Mac. I have an iPod touch for quick internet access on campus, so portability is not a must for me. Ok, so here are my options: 1) Keep the Powerbook for its mobility and get the low-end 20'' iMac. I'd really like to have somewhat of a desktop experience at home, and I won't need the PC apps in class, only for homework and projects. 2) Sell the Powerbook and replace it with a black Macbook and a Dell monitor for home. 3) Sell the Powerbook and replace it with a MBP and Dell monitor for home. Any comments/ideas will be most appreciated.