I like using a smoker. The problem is that when it gets very cold out, it's not easy to keep a constant temperature.
A dehydrator is good for jerky because you can control your temps very easily. A dehydrator will also give you the possibility of making fruits, snacks and camp food as well. What I don't like about dehydrators is the constant sound of them working in the house...also, as good as some foods smell for short periods of time, the constant smell of beef jerky in the home gets to be a bit much. A dehydrator belongs in the garage.
I'll be hitting the smoker again as soon as the temps rise a little....April or so.