im on an ancient PC so dont expect high-end stuff Neogeo and CPS1/2 - FBA - this emu just turned NRX (my former favorite) to a plain test emu. Nintendo Stuff: GB/C - BGB emu, GBC emulation on VBA works fine, its just faster here though less compatible, but hey, it still has a high compatiblity rate overall. SNES - ZSNES/SNES9x - i use both for playing and testing stuff. i barely play SNES emus nowadays though NES - ViruaNES/FCEUltra - as above i barely play NES emus nowadays. might not be as good as a newer NES emu named Nestopia but hey, for a low-end, it works wonders and more than expected Sega Stuff: Genesis/SegaCD - Gens, im open to try other emus though (except the older DOS emus). 8-bit systems (Master System/Gamegear) - Dega/Meka - i play Dega the most between the 2. Meka is more accurate (actually the most accurate Sega 8-bit emu) so its there when i need to test stuff. Meka runs full speed as well on my PC (tweaking applied)