Never visited TKD. As for BJJ, all I ever hear about that are people saying how grappling styles are the only ones worth learning. I even asked a BJJ guy once, "Well, how would your grappling work if you were in a bar, and some alpha male and his three buddies confronted you? Are you going to grow three more sets of arms to deal with all 4 of them?" He did not bother replying to my question.