The smoker you decide on is kinda based on what do you want to do with it. You mentioned a WSM, 250 bucks would build you enough UDS's to cook for a neighborhood. They are pretty much set it and forget it and the Q is fantastic. I gotta warn ya, once you go drum you may not go back. LOL My offset is in the backyard looking like the old dog ya couldn't house break.
"Foil is a BBQ mans duct tape" my wife.