Finally put the JP Enterprises brake on and went to the range. Night and day difference shooting the gun (M&P10). Don't have experience with any other brakes, so can't give a comparison, but shooting my M&P10 without and with..wow.
Is it louder for people behind and to the side..YES!.
Is there a concussive blast felt by people behind and to the side..YES
Does it tame recoil..hell YES! (shooting buddy said his 5.56 felt like it had more recoil)
Shooting the gun prior when strapped into a rest..would almost slide the whole contraption off the bench..now barely moves the thing.
Highly recommend adding a brake, makes the gun way more enjoyable and also allows much faster followup shots
Once some funds get replenished I am interested in trying a different one just to see if I can get same level of recoil reduction with reduced noise and concussion ( ..as so many advertise), but am I happy with what I got..YES!