Best Genesis / Megadrive Emulator

Which one is the best?

I have been using Genesis PSP. It runs perfect but no screen zoom options or Save state options for it yet.

Thanks

i can dgen and pspgenesis, dgen can run some of the NTSC games like Ultimate mortal kombat, but game runs slow, pspgenesis is the best for now, but needs some features as u mentioned, and it should utilise the analog stick

PSPGenesis works the best for me - the latest version ... 0.3b or whatever it is :p