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I find Judo and boxing to be much more fashionable for me but... I mean, if it's common knowledge that Brazilian Jiu Jitsu is the best, then I may as well sign up for it in the one close to my home. The dojo is literally walking distance for me.
If the consensus is shaky, however... Then I want to stick to Judo. Judo looks awesome.
Honestly my goal is really to be skilled enough to easily neutralize or hurt a same-sized person who's hostile against me, without weapons. I have no ambitions of being competitive. If Judo is more than enough for that, then Judo it is. But if Brazilian Jiu Jitsu will do it far better, then I may have to reconsider.
Okay, absolutely not (that BJJ is the "best"). I teach Japanese JJ and am also studying BJJ. It always irritates me when people assume so. It is widely marketed that way for sure, but it certainly is not the case. Ultimately, the effectiveness of a martial art comes down to two main things: (1) your goal, (2) your environment.
If you want to learn to be very effective in a controlled 1vs1 scenario, learn a competition style (Judo, BJJ, Wrestling, etc).
If you want to learn force multipliers, learn weapons arts (Kenjutsu, Kyudo, Kendo, HEMA, Kali, etc.) or formally learn to use various different types of firearms (pistols, semi-auto rifles, shotguns, sniper rifles, etc).
If you want to focus more on inner/spiritual growth, try out Tai Chi or Aikido.
If you want to learn to fend against people without going straight to the ground and learning to keep aware of your surroundings, then look for a style that has its roots in war (Japanese Jujutsu, Ninjutsu, Pencak Silat, military combatives (MAC, MCMAP), etc).
There are positives and negatives to all three of the above. Some of the ones I listed above check off a few boxes - I just wanted to provide a general idea. Which one is "best" is ultimately up to you. Comparing martial arts styles isn't apples to apples - it's always apples to oranges. Every style has a different purpose born from a different history for a specific cause. Determining the quality of a martial art by tossing all of them into a ring is a horrible and quite amateur'ish way to compare them (not taking a stab at you, just that is a very common misconception people have).