This is our second advantium.  It is even more easy to operate than our first, and has more features, such as convection cooking and proofing.  Convection cooking works well as does broiling and of course microwaving.  I know our first one was worn out, as when compared to the new one, cooking times are less and the resulting foods are more evenly cooked.  My biggest issue is keeping it clean.  It doesn't take long for the new shiny interior to become coated with cooked on foods.  I wash out with a soapy cloth after each use.