Should I take kickboxing or Kyokushin for self defense?

I have never trained in Kyokushin, but Im a 3rd degree BJJ Blackbelt, and have been doing KB for years. KB is great because you leanr to strick and throw GREAT kicks. I have also been doing Muay Thai which is what I would suggest. As it teaches inside clinch as well which is great.Similar to dirty boxing but allows use of knee.