Stumbled across this post so thought I'd update it for others looking for same. The newer better clones run Amlogic s812 at 1080P. They emulate up-to N64 consoles, offer save state. Using pandory you can change the aspect ratio on the fly reducing image distortion. As mentioned, joystick and button update is recommended to something like Sanwa. The challenge is their is a crazy amount of different Pandora boxes out their. More info on what to look for can be found here: https://electroarcade.com.au/blogs/arcade/game-console-pandoras-box-key-7-3d-dx-5-6-7-9d-11-12-18s-saga-esport-what-to-look-for