I have been looking at the temperature controllers for the WSM 18.5" smoker and was wondering how many of you here use them and how reliable they really are? I live in Michigan which has a wide variety of weather conditions with or without wind where I live. I would prefer to find a unit that is less than $200 if possible with my main focus of Temp Control not the internal temp although it would be nice to have a unit that does both. I was looking at the Amazingribs site and there are many good ones out there however some cost much more than my price point - Any suggestions????