I chose to purchase a PERL and one ProGen 2 back in 2013 to help beat up on a Lyme condition. After an awful amount of research comparing companies and products, I felt Resonant Light covered all the bases I required. Simplicity of operation, flexibility in it's use, range of effectiveness, cosmetics, support, but most of all "Quality". Resonant Light delivered all in spades. I now have 6 ProGens and I run all of them (some in "contact" mode) 7 days a week and have, since my first day. And today, (2/19/20), I will say that I have NEVER had one single item of theirs fail. Not one! And my ProGen 3 is running as I type. I could bore you with success stories, so I won't... but I want to. However I will say this. It takes less than two min. To show someone how to run a Bank - guess work is removed, the instructions are crystal clear, and all the information you may wish for and more is offered without asking. Most other companies keep this information very close to their chest.
What I'm going to write now needs to be said. I'm a retired commercial diver of 30 years and am now a Naturopathic Doctor. I have communicated with hundreds and hundreds of companies in my life, but none have had a higher quality of personnel from the owner all the way across the board, than Resonant Light. I trust all of them with my health, and the health of all of my clients, and they like their equipment, have never let us down. Ever. No red flags.