Hi... Yesterday went to the store to buy a DVD RW and the guy asked me if I wanted a "plus" or "minus" disc. I looked at him totally puzzled and he said that even though "minus" discs were 20% cheaper, people bought "plus" for multisession. I didn't know what to say, so I come here and ask. Which one should I buy for mere home back up? Does the + or - system matter here? My burner can handle both systems by the way.