I have a laptop Powerbook G4 that had a Super Combo Drive. At one point it was not working and then it started to work again, miraculously. Now it is making a nasty sound, and I think it has died. I would like to purchase a new external drive, but not sure what would be the best/compatible one would be. I called an online store and they recommended the LaCie 16x d2 DVD+ -RW DL Firewire USB 2.0 Drive with Lightscribe. However, I read some of the reviews that said the ripping speed is slow. What would be a good external drive to replace my Super Combo Drive?