i try all kind of emulator for atari78000,atari5600,colecovision and vectrex, i have try all of them. but i had a hard time using them and im a new guy in the emulator config staff. but when i try mess i saw it was easy to use and config, for the reason that is just like mame32. for all those system i prefer mess. them the other emulators. when it comes to nes and snes i haven't try them on mess, because they work pefect with the other emulatos. well that my opinion.