Quote Originally Posted by bb_hood View Post
I have like 3 or 4 of the smaller genesis 6 button controllers with the mode button. I like the smaller size, cord size is ok, and D-pad is pretty good.
The only function of the Mode button I know of is when starting up Forgotten Worlds, sometimes you need to hold it down.

I would avoid any 3rd party genesis controllers.
Actually the mode button can be useful for other games.... my nephew had some Power Rangers game which behaved all wonk with a six-button, unless you start up while holding down mode (which puts it in 3-button mode). I've seeen this behavior in other games too, so I usually use 3-button unless the game specifically requires six.