I've searched though the various posts here at taperssection for experiences using earplugs at loud shows. I haven't really found any specific recommendations.
Personally, I've tried foams, silicone, cotton balls, etc. when I forgot my regular plugs at home!
There has to be something better so I started looking around and the plugs by EarPeace seem to be pretty good based on newspaper, magazine and user reviews. They are supposed to bring down sound level but still allow the high fidelity of the music to pass through.
I ordered a couple of pairs and while I'm waiting for them to come in - just wondering if anyone else is using them and how you like them.