realistically, best handling is going to be around 1.5" max drop. MAX. the most ideal drop (with higher spring rates that would help handling) would probably be in the 10-15mm range. this in no way would be good for looks because youre still going to have a fair amount of wheel gap.
the reason being here is that you want to make sure that the lower control arm geometry pretty well stays in tact. once you get to a point that they are horizontal or inverted in the wrong direction the car will lose the ability to properly use what god gave it. keeping the geometries all correct, lowering the center of gravity slightly, and stiffening the rates to help fight body roll (sway bars, alignment, and tires have a lot to do with this stuff once you have the right springs/struts). therefore, anything that drops farther than an inch and a half or so is not going to help the car to handle. therefore there should be two sets made. one for people that care about corner carving and another for those of us who'd like to slam the car. both sets would realistically need the struts revalved to work correctly anyway.
