Thanks for the input!
The mount does look pretty simple and solid. The idea that if the spring in the mount goes bad just replace the muzzle attachment. I like the look of their new flash hider...
Now we're up to something I can slightly talk about, I'm in!
I have a Nitro 30. To be used on a couple guns, but so far have only shot it on the 5.56 upper. And very little as yet, as it's been in my hands a few weeks. 419 days waiting for paper. So during pretty much that whole time, I have had the YHM brake on a couple of guns. This one https://yhm.net/30-cal-lt-a-muzzle-brakes.html
(or variants for my proper threading).
It is very effective, even good enough at flash. It is great to me, but apparently very annoying to neighbors, so I got their blast can, and intend to use that almost whenever not using the suppressor. It seemed to make no difference in recoil, even though logically it should.
I agree that the big gripe of YHM mounts sucking is that it Relies On A Spring! Well... sorta. Tighten consistently and it should be pretty close to a steel-to-steel connection with the spring just keeping it from falling off. And also what you said: I'll take a relatively inexpensive wear part any day. I bet you could even manage to replace the spring, or by the time ours fail someone will do it for us for a nominal fee.
FWIW, the Nitro seems to suppress the 5.56 perfectly. I can't hear anything from the muzzle, over the a-bit-louder-than-.22LR sounding crack. Still need earpro, but it's in a weird place where it doesn't seem
like you do when wearing it. So I guess, the perfect ear safe config, as earpro mutes the remaining bullet crack sound 99.95%.
Gotta get the .300 set up to try out subs and see how that goes though. Then I'll know what I think of sound suppression.