A good case is whatever you see that you like. In fight sticks, Sanwa JLF's are primarily used in fighting games and Seimitsu LS-32's are used for SHMUPS. There are noticeable differences. I prefer the LS-32's for their short throw and precise positioning.
Of course nothing (IMHO) beats the OG Wico leaf switch joysticks, but I wouldn't put those in a fight stick.
EDIT: Forgot how to spell JLF.