Another vote for the Howard Leight Sport electronic muffs. I guess I don't keep my head upright enough when I shoot a long gun because the muffs tend to rest on the rifle stock and I find it a little annoying. I guess I'm doing something wrong.
I use them with a power washer, weed whacker, or leaf blower. If I'm shooting by myself I use some EP3 Sonic Defender earplugs. They're sold under Surefire, Bone Collector, and a couple other brand names, but they all look the same. They're the best and most comfortable ear plugs I've found.