I have to admit to wondering why 10 18.5 WSMs. Since I bought mine in '09 I don't think that I've seen ten on CL so I'm guessing that you bought most, if not all, new. Are you cooking commercially? If so, wouldn't 22.5s be more suitable? Or one big custom smoker?
I just love 18.5" WSMs. Nothing more to it than that.
Nope, every single WSM I have was a CL or garage sale score. In fact, of the Webers I have now, not a single one was purchased new. I like to think of the Wyocena Yacht Club as a shelter, a haven if you will, for orphaned or neglected Webers.
I cook competitively, but not commercially. I use 4 WSMs at comps, the rest just sit in the shed where, from time to time, I sit and admire them.
I know, I'm a freak.
Which is why I'm here.