I bought a Supaboy from a local shop last week. It was in the original plastic packaging, not a carboard box. I think this means its an original version.

The sound is fine. There is a slight (and I mean slight) noise that I hear when the system is on, but it is so minor I really can't complain about it.

The controls are fine, but the d-pad isn't great. It's functional though.

My copy of Super Mario RPG works. I'm not sure why some people say that it doesn't.

It's not a bad piece of hardware. It isn't perfect, but I've played more SNES this weekend than I have in a long time. I beat Star Fox on the Supaboy yesterday and set a few time records in Super Punch Out