I have used the Jet-Z 'Compact' for a decade now (.243W) and it still doing the job just fine, and never needs cleaning. It keeps coming up as a reliable Brand in every discussion. It is heavy, made out of steel, which makes it long-lasting. I am sure any Ase Utra product will be excellent, but take those claims of 'better' sound attenuation with a pinch of salt: All moderators take some 27-30 Db off, just as they did 10-12 years ago, more just doesn't seem possible -yet.