Any idea on how many DVD's can be burned with a PB 12" rev. B SDD before it fails? I guess I am trying to justify buying a second Mac to do burning with. Between my partner and I we are doing 3 DVD's a day. I know there is AppleCare, but I do use the PB for work,so having a back-up would be advantageous, since it would be a week or so if it needed repair during the three years of AppleCare.