ive got a cab with a dreamcast in it plays nes, snes, tg16, atari, atari 8bit, genesis, sms, gameboy, and a bunch of other emulators, and if you had the snes amu and roms on one cd you wouldnt haveto open the cab to change the games and you could easily switch between systems just by switching the cd. not to mention dcs go for around 15$ right now
just my 2 cents