I'm 5'11" 190 or so and went with the 164.
It depends on what you're riding. Are you hitting primarily open bowls or are you hitting lots of trees. I don't have any problem throwing the 164 around.
"People say that marijuana smoking is going to get in the way of my career. I say to them that on the contrary, my fighting career is getting in the way of my marijuana smoking." -Nick Diaz