Re: .45 Suppressor
Get the SMALLEST, LIGHTEST suppressor you can that when shot WET gives you competitive accuracy and suppression and durability.
Buy the can with the best tuneable Neilson that wears the LEAST on all your host. A can that can swap the Neilson for a static mount is really a plus.
No well designed centerfire can needs to come apart. All centerfire cans (wet or dry) shoot quietest when filthy and wet.
If you can avoid needing to "time" your can to every host, do it.
IMO, in a well constructed pistol can - aluminum bad, titanium good for all pistol calibers in semi mode and with all firing schedules.
A well designed wet can performance kicks the crap out of all well designed dry can performance in semi mode. If a video starts to rattle off about dry performance when one of the competitor's cans in that video will turn in reliable 120's wet, and the guy on video is averaging 130's and thinks it important....you can ask yourself "why am I watching this video?" In short, buy your can based on how quiet it can get.
If your goal is to sit at the range and bang away dry all day get a can with HUGE volume.
You can also ask this question "why would a company bother making a dedicated 9mm suppressor for their very own 9mm hosts if their .45 can on a 9mm host did BETTER?" They wouldn't, and if they did it would mean their 9mm design just plain sucks, it would mean the whole design DEPENDED ON VOLUME. Any suppressor that is designed properly for a particular round will always do better than an overbore can. If not more people would be walking around trying to find a way to carry a can the size of a canoe.
Two of the cans mentioned use fully fashoined baffels, one uses a monocore. Know what that means and why it matters.
Do everything you can to hear your perspective can BEFORE you buy it. Good luck.