hmmmm spring wise they all the same minus the spring ratings. i have sportlines with tokicos and am about to swap out the sportlines for either the ebiach pro kit, neuspeed pro or H&R pro. since the drop i have now is just too low and going stock isnt my thing. as for the adjustable shocks its only like a +/- .5" difference in most applications. changing back and forth wont really give you any real benifit. it just helps for lowering/raising the car down the line.