I've been using the Hollyland Lark 150 for almost 2 years now. and I super love it! The small size transmitters makes it more easier to place in our interviewers/subjects and with the added lapels with clips its just easy to work with them. Ive had the dual microphone system coz i do alot of interviews and also wedding events. I use them professionally and they perform very well. The knobs makes it more easier to level your audio and also has to option to mute them. It also has an option to do mono / stereo output. With its small size, it can fit in a small sized pocket, jacket, vest, inside pocket of the tuxedo. if your also not using the lapel, the built in audio from the transmitters works great also. I also use them as a wireless transmitter line out to my Zoom H6 when i do recording in the audio mixers.