Fighter fans usually prefer Happ Perfect 360's. Many fighter fans also like Happ Supers or Happ competitions depending on whether they like to feel the diagonals or not (Super is a more round feel.. Comps can feel the corners) Sanwa joysticks are also very popular with fighter fans, and are the same types of joysticks used in some newer fighers like Tekken 5.
That's not to say that the Estik or Magstik are "bad" for fighters... but if you're a big fighter fan, most people would lead you towards the P360 or one of the others I mentioned.