The cajun fryer is the best cooker that I have ever used. I own a 6 gal and I have used the 4 gal at the same time to cook for big crowds. The 4 gal uses the same burner as the 6 gal with smaller capacity baskets. The recovery time for the grease to come back to the original temperature is better with the smaller cooker . With the temperature staying higher the smaller cooker it seem to out cook the bigger unit but with the larger capacity baskets its a wash. If I ever had to buy again I would probably purchase the 4 gal because of the lower oil requirements. Also the 6 gal cooker because of the increased gas flow requirements will freeze up at the tank when cooking for long periods (big crowds) in cold weather while the smaller cooker will keep on cooking.