ive had both, had a set of shocks which lowered 40mm all round, was good for a while, ride was fine tires didnt rub the arches etc. Ive just bought spax coilovers which can lower too, but i can adjust the ride and height so thats the advantage. (expensive though)
actuallyyyy, i still have my old spax springs and shocks, about two years old if your interested? Lower 40mm all round and the rides nice.