This stick is also an option.
With shipping two of them would cost you $39.00.
I've had a few dealings with Nicade (the guy selling this stick) lately, and he is good about answering questions, ships really fast, and packs well.
This stick is different from the one mentioned above in that it uses a rubber centering grommet like the old Wico ones, but is still a micro switch stick.
I haven't actually used one; but would guess, based on its construction, that it would be a very good feeling stick for pretty much anything you threw at it.
I prefer my rubber Wico sticks for games that require movement in circles, rather than in 8 set directions.
With either of the recently mentioned 2/4/8 ways, I'd be careful about how tight you get the set screws for the restrictor plate.
If you change them often, and tighten the screws too tight, they will strip.