I've some of the Surefire plugs and they work pretty good. They don't have as much protection as most foamies, but they're close. I've got the ones with an NRR rating of 24, most foamies are close to 30 (except the last batch I got from the walmarks was only 18, not sure what was up with that). Guns aint got shite on airplanes, and I've learned my lesson. I'll wear mine whenever I'm around any kind of noise for more than a few minutes.
eta: I've got the Surefire EP6
This post was edited on 2/19 at 8:52 pm