We used to play with mikes back in the good old AM days, and not surprisingly, there was no one best mike for all people. I happen to like Tube Microphones when I was into all that, because you can change tubes, and change the sound. The acoustic absorbing material inside the mike also effects the sound, and changes in sound can be had by varying the type, amount, and/or position of this material in relation to the microphone element. One guy had a really good sounding AM setup, using an old Johnson Plate Modulated AM rig with a Hallicrafters SX 101 MK 3A receiver. He had a tube type microphone that was fairly well known, yet no one could figure out how he got "that sound". His Secret was, he used a Mullard Tube in the microphone, and removed some of the acoustic absorbing material inside the Mike to "tune it" to his voice. He also replaced and/or bypassed every signal path electrolytic capacitor in the old Johnson and the microphone with audio grade caps. Of course, he was also blessed with a commanding baritone voice! He had a commanding sound, much like a cross between a young Henry Kissinger, and Walter Cronkite. He used No EQ, Compressor, or Reverb. He was a 'purist', and also an audiophile. I can't imagine him ever intentionally making his transmit audio bandwidth wider. The mere suggestion of something like that would probably wind you up on the wrong end of the "Wouff Houng", if anyone remembers That ?