I prefer the geisselle ssa-e, maybe I'm not fast enough to notice the drawbacks of a 2 stage but it works great and i don't have to worry about trigger pins/set screws coming loose on the sealed unit style. I have also tried timney single stage (yellow housing?), psa ept, alg act, larue something, and geisselle G2S. The SSA-E has an amazing break for those long shots