Okay I would choose kick-boxing for myself and here the reasons why.
In kick-boxing I was taught out to fight from the outside and counter punching with footwork and bobbing/weaving. I am 6'4" with 81inches of reach and this style works great for the way I like to fight and my body type.
Muay-thai teaches power from the inside, and I can fight there to but I choose to not to.
In my mind as a "very general" idea of the differences, I would look at cro-cop and wanderlei silva. Cro-cop and myself fight almost exactly alike. He is obviously a kick-boxer, wanderlei silva is more muay-thai. Cro-cop fights from the outside, wanderlei fights a lot on the inside and uses knees etc.
If a law is unjust, a man is not only right to disobey it, he is obligated to do so. ~ Thomas Jefferson
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