Update on these - used the Howard Leight impact pro for first time today.
Very bloody happy - they don’t impede cheek weld like some of their other models.
The noise amplification is weird at first - and you hear stuff you aren’t expecting...like trees blowing so hard you start thinking your gunna die but they are only gentle breezes...
Weirdly - the muffs block out the crack of the rifle but then as the noise volume of the crack decreases, you hear the echo of the shot amplified as it bounces around...very weird and something to get used too.
That being said - very happy, should have bought some years ago.