The long wheel lugs are used if you're using extended wheel studs (which I doubt you are).
The short lugs, are well.... Short. Does the same thing. This is what you'll most likely be buying.
The "Tuner" lugs are meant to be used for wheels that use really small holes and have very little room to accomodate a wheel lug and have a lug wrench go over it. So the hex design is on the inside as opposed to the outside like a standard wheel lug.