whats the best martial arts to study and master?

[ALX1]

and why?
i want to be able to defend myself, i dont want to go out looking for trouble i just want to be able to disable my opponents in a efficient manner, i dont wanna hurt anyone i was looking into judo.
actually i wouldnt mind learning muay thai and delivering sagats tiger knee to someones stomach.

 

[Alex]

Krav Maga if you wanna be the ultimate badass... its the one the Israeli special forces use (They can survive) and is notorious for being just plain awesome....