I've been debating on an dvd burner for awhile after opting to not get the superdrive with my powerbook. I have a desktop pc and like a said before, a powerbook. Would you guys recommend getting an internal dvd burner for my pc, or an external dvd burner I can use on both. I've heard the internal burners get you more bang for your buck... I plan on using the burner to backup music and school files and duplicate some DVD movies my friends have. Also, could you recommend a burner and if i should get a dual layered burner???