Both shocks you are looking at have the same adjustments, hi and low speed comp, rebound, and preload. I would buy the Fox shocks over the Elka's, I think they will come with a better setup. My experiance with Elka is while they are a good shock, there setup is not the best it can be. (Valving and spring rate.)so given the choice of suspension for the rear which way would people go only asking the question because i can get them for the same price which one has more adjustment i love my float x evols but i cant get them for the back