Kenpo is good, but I would still choose Kyokushin. I may be wrong, but I'm sure that if more people actually knew about kyokushin karate, there would be more in the NHB world. Kyokushin, like Muay Thai, has an intense training method and emphasizes low, powerful kicks. Being a practitioner, I would say that it also has a good share of stand-up grappling techniques/throws. Kyokushin, like Shotokan, also emphasizes power, solid punches, but with speed as well.