Ok, well, my favorite combination for really loud guns is foam plugs and electronic muffs. For quieter guns, just the muffs.
I had a pair of Radians electronic muffs that worked pretty well and lasted me a few years of hunting, even though they didn't seem overly rugged.
Also Howard Leight electronic muffs seem to get pretty good reviews.
What is your budget? Electronic muffs range from $40 to probably $500.
There are also "hearing aid" style products but the good ones run into the several $100 range.