Where are the joysticks for retro gaming?

Doctor O writes: With all those nice emulators for classic gaming around (such as MAME, VICE or Stella) I want to establish monthly retro gaming evenings with some friends. The problem is I can't find any good joysticks for that — there's a new version of the legendary Competition Pro that, judging from the many one-star reviews on Amazon sucks monkey balls, and I found the USB version of the classic Atari Joystick which doesn't seem to be available and would have prohibitive shipping costs to Germany anyway.

So, Slashdot to the rescue — where are the suitable USB joysticks for retro gaming?