The reason for the purchase of this unit was to replace the builders installed unit. I have not used all of the features of this product and will comment to the MW only.

With the new unit I have lost some flexibility in the time/temp set-up, setting the cook time to the 15 seconds and not down to the minute is a problem for some of my items. The control panel is not lit so using the unit in low light conditions is cumbersome.  The cooking power has not been a problem.

I believe that with continued use/learning the unit will be a good replacement for the builders unit.