IMO Jujutsu is one of the best SD arts there is. There are many other great arts, but many of those have a Jujutsu influence or are alot like Jujutsu. (Silat)
It was developed over many generations in a nation that was in a constant state of cival war, those who used it were not monks trying to attain harmony and farmers but Warriors, who killed and maimed with it.
It teaches throws, takedowns, head and neck manipulations and breaks,chokes and strangleation, joint locks and destructions, strikes, grappling and maiming techniques.
The intent was to either kill, maim or control and shame your adversary.
Allmost every military Hand to hand combat system is based on or partly on Jujutsu techniques.
Krav Maga- Lots of Jujutsu in it.
WW2 Hand to Hand- Judo and Jujutsu based.
MCMAP- The founder, George Bristol, in addition to being a Judoka and Karateka was also a student of my Sensei and trained with my Sempai.
He intended for MCMAP to be Jujutsu with a few more kicks and ponches thrown in. The MCMAP Black belt is modeled after our Green belt.
Sensei was a cop in Rockland Co NY, you get alot of criminals from NYC there. He says he used Jujutsu to one degree or another every week. What he learned as a teen worked so well when he became a cop, he went back into active training.
When I was in other arts, they would say "Now we will work on Self Defense techniques." and they would be bad versions of Jujutsu techniques. I was like "What is with all the punching, kicking and blocking we have been doing, I thought we were doing self defense?"
It occurred to me that I should be doing Jujutsu for real, not second hand.
Traditional / Combat Jujutsu can be hard to find, but it is worth the search. It took me years but I have stayed with it ever sense.
I love Kali and Silat, I train in them, but I am still training in Jujutsu and allways will be a Jujutsuka primarily.