Has anyone used or even heard of "SportEar" ear plugs? I saw a commercial for them the other day. They are just like the small foam plugs that you stick in your ears, but they have a "valve" that lets in normal sounds and keeps out loud noise. I know they make large ear muffs like that (I've seen them for shooters), but they are pretty expensive. These SportEars are only $20. This is the # that was on the commercial: 1-87-SPORT877 Thought some here may be interested. I may try them out.