hi, i need reccomendations for a basic gamepad for 2d games for use on the likes of MAME, Gens, and freeware games such as Lierox and LBZ that can also be used two at a time so two people can play

also, it needs to be basic and portable without any sticky outy bits to hold like the playstation or xbox controller does.

the only one i can find currently like this is the Saitek Impact X6-20U , which looks cool but i could do with a few more buttons than 4 for games like street fighter.

thanks in advance!