So far I'm happy with my Mini WSM. I never feed more than a family at a time. This lil guy can hold 3-4 racks of ribs or say 2 pork butts or 1 full brisket (cut in half). I like that it is fuel efficient (I use and reuse lump charcoal).
I am thinking my next smoker will be a $100 DIY 22.5" UDS. I found someone locally that would powder coat the drum for like $30.
18.5" WSM and 22.5" OTG.