I started with a Coleman, but kept running out of fuel at the wrong times.
I switched to a "turkey boiler" burner, lots of heat, and a 20 lb LP tank runs forever. I actually use a modified 5 gal steel can and place it on the burner rack. The can has a hole with a 3" pipe in the top. the steam box is on legs and is just above the can on the burner, with just a short extension between the can and box.
Dan