SiCo makes a user-serviceable suppressor, and there is no way I would ever buy another can that is not user-serviceable. I particularly like the Banish 30 because it is user-serviceable and can be run in either 7" or 9" mode, requiring only about a minute to switch from one to the other.
Being user-serviceable is not just important for cleaning. If you get a bit carried away with your rate of fire and toast the first baffle in your TBAC or other welded can you are looking at a major repair to fix it. If you do that with a user-serviceable can you just buy a new baffle -- not a big deal. Same thing if you ever accidentally shoot with your suppressor on loose and get a baffle-strike. The reality is, you ruin your back baffle in your TBAC and you're going to be stuck with it forever, because the repair cost will be prohibitive.
Then there is the accuracy issue. Banish says their no-weld cans are more accurate than any welded can because the welds disrupt the gas movement, the way even near-microscopic defects in your crown can play havoc with your accuracy (which I have discovered the hard way several times). I don't know if that is true or not but I do know I have never seen another rifle/can setup that will shoot as accurately as my Rem. 700 .204 with my Banish 223 can on it. The rifle unsuppressed consistently shoots right at half-minute, but adding the can drops that down to below .3. I want to see one of those "best in the world" TBAC's do that!
And I don't mean just occasionally shooting a quarter-moa group, either. I mean doing it
real often.
If I don't clean for several hundred rounds, when I do take my can apart I have chunks of carbon fall out. I have to think having crap like that rattling around in your can affects accuracy, too. I can take one of my Banish cans off, disassemble and clean the baffles, put it back to together and back onto the rifle, and I get no perceptible change in POI.
I have never had a warranty issue with Silencer Central, the folks who sell the Banish line, but I have sure been happy with the way they have handled my orders. The last one took 5 months from the time I called and placed the order until I had the thing in my hand. Their warranty looks to be the best in the industry.
Sorry if I sound like an ad for Banish, but I get tired of all the claims that "TBAC is the best there is." They aren't.
As noted these are life-time investments (generational, actually) so a couple hundred dollars this way or that is not terribly important to me. What is important is superb accuracy. Here is my Banish 223 at work on p-dogs: