Which manufactures do you prefer and for what calibers? BTW this is assuming you have a Tax stamp of course.
I don't own any...can't afford one! But AWC in Arizona, ( formerly of Texas), makes them in all calibers...and nice prices too! I used to make their parts for them before they finally went totally in-house".
Red Jacket Firearms. But that MIGHT be because I used to work there! Welcome to Red Stick Firearms, Home of Red Jacket Firearms .Gov screwed up my paperwork, have ahd to start over. Waiting on a .30 Can for my AK's, a .22 can (That new ".22 mag" can he has... You should try it, Will built it to specs I wanted, and it is SWWWWEEET!) and a 12 Guage can for the SBS Saiga I'm also waiting on! Drop me a line if you want something, I can save you a couple bux. Do a trust if you do it.
Ditto what Nomad said here, a trust is the best way to go. I've used AAC suppressors in 223, 9mm and a GemTech 22. Love them all.
I've got two cans from Tactical Innovations. Both .22LR - One on a Walther P22 and the other on a Volquartsen custom .22. Of course they also float between a few other hosts from time to time. I've got pictures here somewhere of one mounted on a Bushmaster with a Ceiner 22 adapter. I bought mine back in the day when the can was $100 as a show special at the Knob Creek Machine Gun Shoot. I think the Walther/Can combo was $500 then. I have plans to pick up a 5.56 as well as a .45 one of these days.
