Hi, I see the keiser functional trainer used a lot by UFC guys and was wondering if anyone had any experience. I used free motion cable machine but I was told it is not the same. Does any one have experience? It is a 5-6K investment. I am training for judo, sambo nationals and going to start competing BJJ. My goal is to get explosive and put minimum damage on my joints. Does anyone have any experience and knows how it compares to regular cable machines? For explosiveness how does it compare to other cable machines? Thanks!