JUSTIN DEPOLIS once said , that most radio operators wouldn't know what good sounded like if it slapped them in the face . I agree . but even a scoped out pefect wave is only going to sound as good from the person using it and the machines that say so . All these NC mic's sound good from the users depending on the radios they use them on ? not all are alike. I personlly like the RK-56 but I've used the knock off CDL's and other much cheaper mic's , my reports were not from machines , they from people and most really couldn't tell the differents , maybe one would say basser and the others couldn't tell the differents at all. It also depends on how ones radio is tuned ? bottom line , if your radio is NPC'ed or cap/resistored / swing kitted , any of these NC type mic's will work very well on those radios , even a good stock mic would be more then enough.(these are not power mic situations ,this is when to much is to much) There's a time and a place for a NC Mic and there's a time and a place for a power mic , How was the radio tuned ? How good do you hope to sound ? Does sounding like being in a wind tunnel float your boat ? Does having your wife yelling at the kids in the back ground ring true ? tv or stereo blarring in the back ground work for you ? ect. ect. Different strokes for different folks.