Product review (2 stars): Not Very Durable
I have had this cook-top for 4 years now. These are some of the deficiencies I found:

The knobs are made of the wrong type of plastic for the application. When using a 5 gallon canning pot the heat gets to close to the control knobs and they melt.

The enamel on the cast iron grates starts to spald away after high temperature use. There is missing or bubbled enamel coating where the flames come into contact with the grates.

One grate had a section of iron broke off leaving a gap of 1/2" in the grating.

The burner covers show discoloration from heat and some rust.