We sell the @Games Genesis you guys are talking about. It's nice because it will also take the old Genesis carts. The wireless controllers are complete shit, however. They are IR, like a TV remote, so if you aren't pointing them right at the console they stop working.
I've had a lot of people come back and snap up Genesis controllers to plug into it because the wireless ones suck that bad.
Origin - JStarX7 STEAM - Agent.X7 PSN - JStar_X7 Xbox Live - Agent X7