I only have the 14.5, and it's fine for what I use it for. Just my wife and myself now, so really, the 14.5 is perfect size for 2. I only do brisket flats, get smaller ones from Costco, and it fits just fine. Will easily do butts without any problem. And for ribs, I use a rib rack and just cut the racks in half. I'm pleased with the 14.5. I may buy a Jumbo Joe to play around with, but have no plans to buy anything bigger in the WSM line.