hi guys, i think i'm about to change my shocks, i'm planning to change them (front, rear) at the same time. my only question is, while i'm searching for shocks, i noticed that bilstein have two kind of shocks for the rav, one is HD (heavy duty) and the other one is the sport. do anybody have any idea whats the difference between the two shocks? the ride? and also maybe you can suggest, aside from bilstein a better shocks for my rav. thanks in advance.