ECB does a great job as long as it isn't dead of winter cold. Even the electric model turns out nice Q using wood chips...but the element burns out at the worst times.
Brinkman water smokers (elec and charcoal)
Weber kettle grill
Uniflame Gold Stainless 5 burner propane grill / rotisserie
BBQ Grillware upright propane water smoker
A trench filled with wood coals and covered with chain link fence