Well I live in the North-East in Isaan, about 1,000 Km from CM, the air seems pretty good where I live, in the countryside, but what do I know. I like CM, it has a good night life and the tourists seem to be a better class than the ones you get in Pattaya or Phuket. It has a nice atmosphere (pardon the pun) to it and has nice surrounding countryside, it isn't called Laan Na (a million fields) for nothing. Turtle lake, which is great for swimming, actually has sweet water which you taste when it gets in your mouth.