I'd personally suggest Krav, but since it's not an option.. BJJ for sure.
I know mostly Krav, but also know some BJJ, Aikido, and random techniques from a bunch of other styles. Krav/BJJ are my strong points, though. No where near JustDave and Anthony.. lol
To me, a combo of Krav and BJJ... you can't get any better. Of course, the best option in any fight is to attempt talking your way out of it.. that is the best self-defense. If it's not an option, learn BJJ/Krav
