I've learned to trust only one opinion - my own - when it comes to equipment of any kind. I need to see it, touch it and use it before saying anything positive or negative. I don't smoke meat 24/7, so smoking on a Weber (kettle or WSM) works perfectly well. I have not seen, touched or used the Franklin offset smoker, or any other for that matter, but I would like to someday. Something tells me I might find it appealing, but not so much I would give up my kettles. (Same for the Weber pellet cooker for that matter.)
Marty