Product review (3 stars): It's OK. Not Great.
I purchased the 2-burner version of this Induction cooktop by Summit in 2010 and it stills works OK, 5 years later.  Things I discovered:  don't install an induction cooktop over an oven if you plan to use both at the same time.  The heat from working oven plus heat from induction shorts out the cooktop. Over and over again. It will just shut down and has to cool off before starting up again.  Induction cooks FAST and QUICK: water boils on the 4, of the 1-8 settings, you don't need the higher settings for cooking anything that I've discovered. This cooktop does not have a simmer or very low setting, even at setting 1 (one), water or rice/quinoa will continue to boil so you have to watch the stove and shut it OFF or food is easily burned.  Basically -- stay with whatever you are making on this cooktop -- no setting allows you to walk away for any length of time.  I'm reviewing here as I just purchased a 4-top Induction cooktop and DID NOT choose this Summit one, even though the price is attractive.  For $200-300 more, I recommend another brand with better reviews.  That's what I did.