My neighbor has a smoker that I love the looks of. It's similar to this:
The difference is my neighbor's looks like it is made with about 20" pipe, and has a stack on either side connecting the top and bottom. It looks like it has room for one turkey, or a few slabs of ribs, or a butt or two, etc, as it's not very big. One of his friends made it for him as a birthday present.
If I made one, I'd probably do one like this. You don't see it too often (his is the first one like it I've ever seen) and it seems like it would do pretty well in eliminating the hot spots.
All I know is I saw it and fell in love with the design. Someday I will own one!