Just wondering how well they work, and if they're worth the money? Also, theres a lot of different kinds and brands and price ranges. Will a $60 one work as well as one of the $200-$400 ones? I know thats an obvious answer, but are the cheaper ones junk, or are they at all comparable to the higher end ones?
For those that dont know what im talking about, a lot of SWAT teams use them.
Heres a higher end one:
http://www.envirosafetyproducts.com/...icrophone.html