We also have a trailer-mounted log-burner in addition the WSM. 1/4 steel pipe, 20-inch firebox, 48-inch horizontal, 48-inch vertical, all mounted on an old horse trailer frame. It's an Oklahoma Joe's clone, made by an older friend of ours who made one for himself and one for his son. When he figured out that son was doing most of the cooking for the family, he decided to sell his.
We like our logburner, but the WSM gets used much more often. The logburner is great for those few times when "the boys" are able to get together to sit around the smoker, sip on refreshing adult beverages, lie to each other, and play in the fire every 30 - 45 minutes or so. That opportunity doesn't arise often, though. We have pecan, hickory, and peach in our woodpile, with a couple of apple trees coming from a neighbor's back yard in the next few days. Most offsets have an area near the firebox that you can't cook on due to the heat, so remember that just because the horizontal is a certain size, you can't cook on all of it. We will do ribs and poultry on the log-burner, but I won't sit up all night to babysit briskets or butts on it. They ALWAYS go on the WSM.
More often, there are other things that we need to be doing during cooking time, and the convenience of the independent little WSM is GREATLY appreciated. Because of the time currently required by senior family members, seems like night-times are about the only times that the WSM gets fired up - thus I have dubbed myself the Queen of the All-Nighters. I'm not even sure that my lil' ol' WSM will even cook during the day anymore!
And, no, no geese were harmed in the course of this cooking session.
Keri C, smokin' on Tulsa Time