I'm looking to buy a new 15" Powerbook, but am not sure if I want to fork over the extra $200 for the Super Drive. If you own a PB with the Super Drive are you satisfied with how long it takes to burn to a CD-R/CD-RW? In fact, on average how long does it take? I doubt I'll burn many DVDs, but am attracted to the option of being able to do so. However, the burn speed of a CD-RW concerns me (4x for SuperDrive vs. 10x for Combo). Any insight/experiences are appreciated.