I really enjoy my Logitech Extreme 3D Pro twisty stick (does NOT have force feedback). Tried a force feedback stick awhile ago and promptly got rid of it.
Some people like rudder pedals (slide or tilt) and some like a second throttle control joystick.
Like the rest of your computer, joystick depends on your individual style. Try to find a couple stores with good control selections so you better know what's available.