switching stations for a moment

We just got back from The Sadies/Neko Case show. Fucking rocked, of course. But here's my query. For those of you kids in the know (Richard, Ted?) how does one choose the optimal set of ear plugs, which block out just enough decibels to protect your hearing but not enough to damage your experience. (The ability to block out really drunk annoying guy and his drunk bimbette botox queen who just wandered up the street from the radio folk hour show with Webb Wilder would be a plus, but not necessarily a dealbreaker as there's something kind of ambient about comments like "'This Little Light of Mine' was pretty damn cool, huh?" or "Depressin'? You mean like Amy Mann?" I'd tell you about the botox broad's broken wrist, but it's late and what I'm really interested in are...) Ear plugs.

Advice, warnings, pointers, cost estimates. Por favor?

Also, The Sadies won my heart with their version of "Pretty Polly," a song I've never actually heard a version of that I didn't immediately fall in love with.