This cooktop is stunning and we love the looks.  It also heats quickly and cooks very well ... we're pleased with that (coming from a gas cooktop, we had concerns about electric but this is a great product).
Our issue is with keeping it clean.  The black surface is mirror-like and instructions say to clean it with Cerama-Bryte Cream after EVERY use.  We're not terribly messy cooks, but we seem to be spending a lotttt of time scraping, rubbing and polishing this cooktop.  I would recommend using a microfiber cloth to polish since a paper towel leaves streaks.
If you have strong arms to clean, this is the cooktop for you :)