The Happs competition, happs super, ultimarc, t,e and j sticks all use microswitches, as does the euro--hence the clicking noise. WICO was the notable supplier of leaf spring joysticks, there are others but I can't think of any right of the top of my head. Microswitch joysticks are less maintenance and usually cheaper than leaf joysticks and provide an audible sound when contact is made--some prefer them for figjhters for that reason.