Have 4 gal 2 basket and have cooked for 20 people no problem 6gal 2 basket has deeper baskets and can hold more food both are great 9 gal 3 baket is top of the line and no telling how many it will cook for the only problem with the larger capacitiy cookers is the longer initial heat period my 4 gal is up to temp in 12 min flat easy on gas the 6 gal unit takes longer but not by much all units after initial heat period are easy on gas just watch temp gauge and adjust gas flow accordingly.
Noslab.