First things first: Any martial art has considerable value when it comes to self defence. When chosing what to practice you have to determine what best suits you. For me its about increasing my toughness and standing a better chance if I ever end up in a fight i cannot run from. But for a large group of martial artists its about recreation. I did practice krate (goyu ryu) for a few years but i felt i was spending too much effort in learning katas compared with learning to fight. I train in krav maga now, which is every thing I wanted in a martial art, but I have almost passed out for the second time of exhaustion yesterday so its not recomended if you just want to a workout.