It is generally well-designed and works efficiently.  It is well-constructed and seems likely to last a good while.  We found it cooked faster than our oven and, for many things, just as well.  However, I did find the defrosting of 1-2 slices of bread given too much time, 2'34", even at the 1 setting.  Letting the oven go that long will produce a light toast, not simply defrosted bread.  For the latter, 1'30" is generally all that is necessary even for dense bread slices.