Though Hydrolics work great on some bows, they are out of date. The real action is in rubber. Simms, doinker, and I like the Shrewd. I also really like the simms mushroom on the end of a stabilizer, though a lot of people put them elsewhere on the bow. I haven't seen any of those heavy hydro stabs break, but the bowshop guys would know better. What is bad about them is they add a lot of weight for what little stability they provide.