I agree: take Judo. It's an easy transition from that into other forms of grappling and BJJ, and those throws are bad-ass.
TKD is pretty but their punching is lacking. However, if you want to learn all the kicks that's their specialty.
Some of those gyms may have legit boxing/kickboxing or at least something with sparring, which is what you'd want. Skip the cardio-kickboxing because 90% of the instructors who teach it don't know jack about boxing or martial arts.
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