Simple, accurate, precise and noninvasive
After seeing my gym purchase one of the commercial models, I decided against the idea of paying $30 a pop for body composition testing so why not spend 15x more and get my own personal unit.  I have called the company and aside from a different component here and there, this $500 tester is as good as the commercial version.  You can only store 5 "client" but if you are not a gym owner you don't need to store all of that information anyway.<br /><br />The reason I use this tool is because I am always tweaking my diet and this tool gives me feedback within days of engaging in a different eating or training plan.  It's invaluable.  I was recently doing a GOMAD (gallon of milk per day) bulking cycle and as soon as I bought this, I tested at a whopping 20% bodyfat!  I immediately decided to go on a very clean low carb paleo diet and am now sitting at 12% ready for another bulk.<br /><br />This tool has changed my life.  I now track lean body mass vs weight.  It's become invaluable to me.
Rating: 5 stars