Funnily enough I don't own any myself. Use them a lot but can't be bothered with all the paperwork. Yankee Hill makes great suppressors for the price. There's better but at that price, nobody gets close.
About to setup my trust for converting my PS90 to a P90 and add a supressor, then a silenced AR15 next. My gun nut buddy has over 100 high end firearms and he just finished his a shortened and silenced .458 SOCOM, I am seriously jealous, though not of the ammo cost, holy smokes. Same price as rounds of .50 BMG! He loves Silencerco, especially for big calibers, I'd love a Harvester .338 on a long rifle for comfy distance target shooting.