I use AAC and some others. Really like the SDN6 works well on 308 & 223. Using aac quick attach mounts it works on 3-4 different platforms. Its size & effectiveness make it one of the best values out there. On a 300 blackout iys not much louder than 22 bolt gun w/can on it.
For pistol i like any 22 can - most of them are very good. Some have more frp (first round pop) than others. Some come apart for cleaning. Centerfire i really like osprey for ability to use stock sights & cross platform ability.
For purchase, you would do well to set up an nfa trust. Shorter wait time and/because u don't go thru your CLEO.
A single shot 22 bolt gun w/sub 800fps rounds really IS movie quiet.