Sega SG-1000
Sega SG-1000 II
Sega Mark III
Sega SC-3000
Sega SC-3000H
Sega Master System
Sega Mega Drive
Sega Mega-CD
Sega 32X
Sega Multi-Mega
Sega TeraDrive
Sega Neptune
Sega Saturn
Sega Dreamcast
Sega Pico
Sega Advanced Pico Beena
Amstrad Mega PC
My favorites definitely have to be the Atari 5200 and the Sega 32X on the Genisis with the Sega CD. Epic gameplay and amazing graphics. Very easy to set up, etc..