I am a family doc in the land of Notre Dame, formerly a Memphian. My entry level 11 year old side box smoker just rusted through. I am in the hunt for competition quality smoker, for home use. I can afford a custom build, but I don't need a trailer, don't need to smoke 30 butts or a whole pig. Prob would smoke 10 butts somedays, but I just want a good sturdy long term build. Thoughts on the side box vs insulated vertical? Am I getting ripped off spending 2-3K on a custom build? Help please.