I've had mine for 9 years, it's a Frigidaire and I've never had any problems. I use cast iron, uneven bottom pans and have never had any problems. Although I don't ever put pan lids on the top and generally I put a hot pad down if I'm going to set a hot cookie sheet or baking pan on it. (We had a Corning Ware baking pan hot out of the oven that we set on a non-ceramic stove top, it was cold and it made the hot baking pan explode). So now I always put hot pad's down first, not matter what.
I just clean mine with soap and water from the sink. If something boils over I just use a razor blade to scrape it off. I do have a bottle of Ceramabryte, but I only use it about once a year.
When we first got the stove I remember thinking that it took a long time to heat up and start cooking. But I always had to turn it down before things finished cooking because it stayed hot a long time. I was used to cooking on regular electric, but it did take a bit of getting used to.