However pulling over and not having to leave my seat to adjust damping rates is a very nice feature, despite others' motives for makng the same purchase. All I can find on these SS's is the spring rates, which IIRC are the same as the SPL, with the same # of damping settings. However now that I know they don't have the same adjustability features as the SPL I can qualify the difference in price (without the EDFC).