Are you asking WHAT SHOULD I DO?. Depends what you are into. Muay Thai is more complete. However Kyokushin is known for developing people into mentally and physically tough fighters. Muay Thai is usually applied with a more scientific approach, Kyokushin from my own experience is harder due to the nature of the training and the amount of full contact sparring, beware if you aren't use to martial arts Kyokushin will be a real shock.... Full contact sparring will take a bit of getting use to. Muay Thai turns you into a more complete fighter, and is much easier to adapt to the ring and fighting various other styles. Kyokushin can be sucessful in the ring if you are willing to cross train later with boxing, muay thai, kickboxing etc. Go along and see what you like best, pick that one... simple.
