Ifb 30L its suitable for family of 5. Can be used for baking, grilling, fermenting, cooking. Received 3 yrs warrenty. Tried baking cake. It came out very well. There are two modes auto convection and manual. When you choose auto convection it actually gives you the measurements, like how much gm of cake you can bake or how much rice you can cook . Keeos you informed about cooking time and power level. Auto switches of if temperature gets too high. Overall, very good.