Definitely worth having!
I have the LZR. The biggest benefit I have seen it make quickly is with my PSSM client. The horse was rock solid and positive for 2 types of PSSM. My first session with him was MagnaWave only and on our second session a few days later I added LZR over his whole body. Huge difference. The horse who I have been working on for a year who was unrevealed and had a euthanasia date is now rideable and sound at all three gates and that date has been cancelled. Definitely worth having!