I must upgrade to a new mobile computer for recording and though I would love to switch to a new Powerbook, I'm not sure if it would be the best deal for me. For the same price, the two laptops I'm debating between would have: A) G4 1.5GHz 1.25GB RAM 80GB HD 5400rpm 12.1" 1024x768 64MB vRAM superdrive & B) Pentium M 2.1GHz 2GB RAM 80GB HD 5400rmp 12.1" 1280 x 800 (widescreen) 64MB vRAM superdrive Is that a HUGE performance difference? Is it so great that I should suffer with windows? If i could I would wait till the new generation of powerbooks but the latest I can wait is end of July but the sooner the better! Also ultra-portablility is a must. Also is there any way to try out a powerbook with a specific program (Pro Tools LE) without committing to buying it, or with some sort of full-refund return policy? I would LOVE the powerbook but it HAS to be able to perform well enough! Thanks for your continuing help!