After my Wolf Ears died (just short of 30 years) I went through a long and frustrating search for a good replacement. The big issue is that the market driving this type of muff isn't actually shooting, it's industrial needs. A lot of products get all atwitter about maintaining your "connectivity" to radio, cell phone and other audio inputs and ignore impulse sound protection. I tried one product that actually amplified gunshot noise.

I ended up with the Peltor Tactical Pro and am very happy with them. Once you set the basic sound level, it saves your setting and goes to it once you hit the one button needed to turn them on. At least until you have to change the two AA batteries. Very good battery life.