Brazilian Jiu-Jitsu vs Tae-Kwon-Do?

I'm thinking about getting into BJJ, because my school's wrestling season is over now, but my friend, who does 4 martial arts, says TKD is more practical. I've seen videos on Youtube, and it seems to me that TKD is much more flashy and a lot less practical than BJJ. Now, I'm not saying "Oh,... show more I'm thinking about getting into BJJ, because my school's wrestling season is over now, but my friend, who does 4 martial arts, says TKD is more practical. I've seen videos on Youtube, and it seems to me that TKD is much more flashy and a lot less practical than BJJ. Now, I'm not saying
"Oh, TKD sux."
I just want to know which is the more practical martial art to get into.

Also, on a side note, who do you think would win in a fight? A BJJ blackbelt or TKD blackbelt?
Update: Leave Luck to Heaven
Personally, I like ground work and grappling better than hitting people.
Probably because i do high school wrestling.
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