Originally Posted by Ron_L
You can always buy the charcoal ring for the 18.5" WSM to reduce the amount of charcoal needed for shorter cooks. It's rare to hear some say "I wish I had bought a smaller pit" but you hear "I wish i had a bigger pit" all of the time.
Heck...$2 worth of Home depot bricks and some aluminum foil can do the same thing.
I can say that even for 2 the 22 is the perfect size. Imagine this...you want to do steak and potatoes on the grill for 2...the 22 can not only fit everything but you can set up heat zones too.
EDIT - Oops, I was thinking the OP was talking the kettle not the WSM. Anyway, I have the 22 WSM and it's good. It "can" use a lot of fuel but it's nice to be able to load it up. I'm actually planning to do a full packer, a pork shoulder and probably one other thing on mine this weekend (maybe turkey legs).