I have owned one of these for three years, it did require a little fine tuning t get it to a point of reliable set and forget smoking. But once there it has been good enough that i just ordered a second one. One thing I would suggest, is to plan to heat seal both doors as that will cut down on any temperature fluctuations. But this is something i would do with any smoker that was not heat sealed from the factory. over all Im pleased enough to now own two of these and have recommended it to friends.