I'm sold on getting a WSM. After reading many threads I'm 99% certain of going with a 18.5" because: 1. I live alone and usually cook for myself. 2. My deck is small and it will take up less space. 3. Using less charcoal and being able to have 18hr cooks without refilling seems fantastic. 4. I like ribs but don't see a problem with cutting racks in half. 5. Like the idea that the unit may have a higher humidity when smoking less meat, and will lose less energy in cold weather. Anybody think I'm off base?