I am big fan of Zwilling knife user, I decided to try out their pan product. I use flat bottom electric stove for daily cooking.  I dishwash them about 2-3 times a week for the past year.  The cooking surface was well-coated compare to the flatpan from calphalon unison,  I just wish they can improve bottom coating. After a 5 months use, you start seeing coating are began to  Peeled off due to the dishwashing.