Product review (4 stars): GE Gas CookTop.
I bought this unit to replace a GE Profile cooktop that was 18 years old.  Installation was easy, but the opening in my counter had to be slightly enlarged about 1/4" to accomodate its more rectangular shape then the older model.
The burners light easily.  The center burner has high BTU to help boil water faster or heat up a frying pan quickly.  The burner parts come apart easily, and go back together efficiently for cleaning.  The Burner Lock feature works well to child proof the cooktop.  It's nice having an all new cooktop with no rust.  The cooking grates feel heavy, and are dishwasher safe.