+1 I had my audiologist custom fit a pair of Etymotic Custom Musicians Earplugs with three attenuator options for different applications. I believe the 15db, mid attenuation one has the flattest response. I don't believe there is a better option out there.
Best ear plugs for both sound quality and reduction
Any recommendations for ear plugs used mainly for live music? Not alot of info on the interwebs.
Etymotic, Eargasm, Vibes, Hears all seem OK but like anything audio, it's about fit. (In this case literally) Other solution is getting a custom one made from an audiologist.