I have been a Martial artist my whole life. And in that time, Ive trained in just about every system/style availible, and have gotten Blackbelts, or master of sport, in many of them. The one style that Id like to spend some time playing with again though, would be Kali. I Love the flowing hands of that system, and Ive found that it has helped in my grappling studies more than anything, because of the check flow that it teaches.