I have been using two Biomax 900 models with the horizontal rack stand for the past 2 months. I also purchased a massage table so that I would not have to keep moving the lights in and out when using on a bed. I use the lights to recover from weight training and cycling and find them great at minimizing muscle soreness and joint recovery. Please note that these panels are powerful and can increase your pain in joints and muscles if you overdose. You will have to experiment to find the proper time. I personally use 20 minutes, (10 minutes front/10 minutes back) at 20 inches from panels every other day with great results.