The Countryman B6 has always amazed me with the quality of audio it can provide for such a small microphone. It has become a life saver as an example. My go to lav microphone is usually a Countryman EMW because I usually fond it the easiest to hide and the best sounding. When I need to avoid noisy clothing or have a women wearing something very sheer I will use a Sanken Cos-11 since it is is a top element lav I can just peak it out the top of wardrobe. But for impossible wardrobe and noisy mens dress shirts I use the countryman B6 I just peak it out a button hole and bam you can hide it in plain site. It also has a variety of different color caps so you can match the cap to the shirt color. So everyone should have atleast 1.