do I need just an Arcade DUO card or do I have to get the Arcade Pro? I only ask as I just traded Zektor for his Super Grafx and I am getting a cd drive as well for the SG. I was thinking of going the CD-ROM2 route instead of the briefcase as it can play System card 3.0 right out of the box correct? It is the briefcase setup with interface that would need an actual Arcade Pro as it has no system card straight out of the box (no the 2.1 card doesn't count).

I am asking as I have a Arcade DUO card for my DUO-RX if that is all I would need if I got the CD-ROM2. If not I need to know as I can get the CD-ROM2 and Arcade PRO for around $100 shipped if need be, but I am trying my best to save some cash around the holidays as this is the first one my daughter will be old enough to remember. This will probably wait till after the New year but never hurts to have the knowledge ahead of time so I can make an educated guess in the best situation. Anyhow I am done ranting.