Hi,
I have some good old CompetitionPro joysticks and they work really good. The advantage of the CompetitionPro is, that it uses standard industrial microswitches, so it is always repairable. And the old ones have a very good response.
My second favorite is the Speedking from Konix. This joystick from the late 80th is ergonomical formed, so it is only usable for righthanded people, but it responds very good and lies perfect in the hand, so you can play anywhere and don't need a table. This joystick has been produced in two variants, one with a single fire-button and another one with two firebuttons and autofire. Unfortually I haven't seen the second version anywhere to be purchased, even in the late 80th I have only seen the first version. A friend of mine has had the second version, so it has been produced... :-)
Oh, and this joystick was also available as digital joystick for the PC (with the wide PC-joystick/midi plug).
Noster