Okay, simple but complex question. I am a security guard and need to use force once in a while. The law binds my hands a bit, I can't be too rough on "customers". So I'm looking for a new martial art for me (used to do contact karate), that would give me softer yet effective tools for the trade. Basically I have three options: Systema, Bujinkan, and one Koryu Jujutsu style. Let's hear it: Why would Systema be a good choice?