I purchased the unit because it was close fit to my previous cooktop. My old smooth top did not have knobs, was easy to keep clean and served me well for over 20+ years. The Frigidaire units knob setting numbers are small and hard to read. Even though the glass top was made by the same manufacturer this cooktop is a bear to keep spotless. My old smooth top had ribbon heat and provided great temperature control. This smooth top does not regulate the heat as well nor will it boil water as fast. I do like the larger size elements that fit well with larger pots. Installation was easy but the stabilization 'L' bracket slots were too wide for the screws supplied. The screw heads slipped through the slots. A flat washer fixed the problem. Would I purchase again.. Unfortunately no.