I've been majorly impressed with how the high flow STO Falx performs on my Maverick, even at very high power levels. I honestly think it would be very hard to beat for the size and weight. If you want to go next level, the STO Sarissa high flow is amazingly quiet on my Maverick. It's back yard friendly at 130 fpe! That is, assuming you have a quiet target trap. I also love the Huma MOD 40 moderators for their flexibility. I have a shiny new Donnyfl Ronin that I will be testing in a few days, but I don't know how it performs yet. I only know of one person with a Impact that tested the Falx against the Ronin, and he said he preferred the tone of the Falx and they were pretty close in sound reduction with a slight edge to the Falx. That only means so much though, because the moderators work differently, depending on power level. The Ronin could be better at a different power level.
I talk to the guys at Utah Airgun where I got the Sumo and they feel the Sumo is enough but not on my darn Ataman AP16 pistol, at 91dB, with what your claiming I ordered both the Falx and Sarissa in 1/2 UNF for the Maverick
Thanks