Oh, I see you all have forgot to mention the ultra ergonomic Wico Ergostick. A hand held, completely made in rubber sporting microswitches.
This crappy image of this rare collectable was all I could find. I've played tons on one of these, however the Tac-2 is my favourite, unbeatable! It's true to its name, it's accurate although i agree to the fact that the firebuttons gives in after a while and you need to have a Tac-2 with the steel handle. The later revisions are crap!