Its true, this is one of the friendliest and most helpful boards I've ever visited. Thats why I'm still here.
As to your question. In my own opinion for pure application and self defense I would recomend mantis, wing chun, most of the CMA that focus on applications. There are good and bad teachers of CMA just like anything, but I've yet to find a system I feel is more straightforward and practical for self defense than 7*. Alot of these principles I like are also found in other systems and we share alot with wing chun. Some of the animal systems can get caught up in forms and techniques and loose some application so be carfull about that.
What I like about CMA and, in my limited experience, mantis is that they are very much thinking systems. Its about using your head, some refer to CMA as the "intelligent arts" which I think is a bit confining to other systems, but it is appropriate. We focus on letting the opponent use his strength and we just go with it allowing him to hurt himself.
I'm not doing well with descriptions today, so I'll end, but I would recomend wing chun, mantis, tai chi, or even hung gar.
7sm