I have several RF silencers.. DA Mask, SiCo WarlockII, EA NYX mod2, and a first gen Sig Sauer SRD22. With a CGS Siren and a SF Ryder22a pending, so no personal experience with those two yet.
They all preform very well, however if I were to choose, I would put the DA Mask and Sig Sauer SRD22...