I bought an 8x external I/O Magic burner from a friend. I backed up about 30 movies just fine, now it gets stuck on every burn. I guess a need a new burner. can anyone tell me the best external burner to get for the least money. it has to be external becuase i burn with my laptop. any links would be great. i really don't burn faster than 4x so that would be fine. thanks!