Hi - I've said this before, so some may think I'm pushing this for a reason, but here goes - try a Lawrence Precision Moderator.
I've had a couple of ASE products, they worked fine, but were heavy. I shot them on .243 and .300wm. I then bought a Lawrence Precision one in titanium.
It's light, required no maintenance at all, I decided on how many baffles I wanted and what thread it came with. I also went to have it fitted by him, so there was no possibility of the threads not being tight. On one factory rifle this meant he had to cut his thread to fit, as it wasn't quite exact enough on my rifle.
It's probably had 600 + rounds though it by now, and has had no issues. Oh - and should I wish to use it on another rifle I can get another rear bush supplied to fit that barrel too. Instead of it coming from the other side of the world, it's made in Notts, and I can actually see them being made if I wish.
Opinions are like a***holes - everybody's got one. I find the product very good, and although at first not cheap, added up over the 5 years I've had it, and the years I expect to continue to have it, it's actually good value for money. In life, you get what you pay for.