Summary: I'm not a techy person, so knew very little about DVD players except that you put a disk that looks like a CD in a machine that looks like a CD player. And to be honest that's just about the level at which my knowledge still is. However from the non-technical point of view I can say what I have found useful and pointless for my average-non-techy-person needs. I have a Toshiba SD-3109 which has a 'Dual Disk System', i.e. two DVD drawers.