Hey everyone- Just made the switch to APPLE! I got one of the closeout 17" superdrive G5 iMacs. The specs say the burner is 2.4x DL for DVD-R. What have people been using for DL discs? What has worked, what hasn't? (they are pretty expensive drink coasters, which I why I'm asking). I've had luck with memorex for my single-layer PC burner (plextor)..