I set everything up using launchbox, all the usual emulators etc, and thought big box was merely a more arcade-orientated wrapper and that everything would have the same functionality, but I have found a number of instances so far where everything works fine in launchbox but not big box - for instance, Daphne Dragons lair works great in launchbox, but in BB I just get a dos box on the screen and the game does not load, if I load a ps3 game using rpcs3 then launchbox quits it ok but I cannot quit at all using BB even though other systems work ok. Incredibly Demon Attack on the Atari 2600 works fine in LB but in BB has no sound.
I am at the point where BB is so hit and miss in terms of what games work then I have no option but to use Launchbox which is very disappointing considering the cost...