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I can't speak to the electronic hearing protetors, but the Howard Leigh and Peltor muffs mentioned are both reliable names in the hearing protection fields. I advise the use of plugs and muffs since a good pair of disposable foam plugs will provide a Noise Reduction Rating of 25-30 dB while most muffs will provide 15-25 dB. If you combine them remeber to only take "credit" for 5 dB of protection from one of them.
Be sure that foam plugs are inserted properly (not just stuffed in your ear, but rolled and inserted into the ear canal) and that the muffs are worn properly. Improper use of either reduces their protection amazingly.
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TANSTAAFL
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