Thanks for asking, having 450+ rounds on it now and think I can speak about it with at least some experience. I am shooting it on a 6.5CM. My nephew has had his about 8-10 (?) months longer on a 308, more than double the rounds, closer to 1000. Both bolt guns. Ah to be young, making a ton of money with no commitments!!
Mine is on the Nomad LTI XC and the nephew has it on a Nomad 30, steel. The increase in db at shooter ear is negligible, if you want to pick a nit - it is "louder" but you really need to be sensitive to it or be looking (listening) hard for it. so, yes, you can hear that it is louder but it is negligible. That is suppressor brakes in general IMO.
In terms of recoil reduction/staying on target - 110% improvement. Really, it is a dramatic difference for the better. From watching trace to seeing the impact (or miss) I have never been able to do those things this consistently or easily. A friend has the other brake, I have shot his 6.5CM and it is the same in my opinion but I am not going to go full nerd on stuff that doesn't matter.
More vents better? Sure, when you get to five or ten. Difference between two or three, nope, not to my ear or experience.
Build quality is fantastic, well machined and finished, and looks great. I will absolutely buy another SRS brake if the need arises or I need to replace this one. No shilling, not associated with them and nothing to gain. If you want a brake on your suppressor, get this one. I believe in being happy, you do you boo.