Recently purchased and installed by a local appliance store - this model was chosen because we were replacing a broken cooktop.  The JP5030 fit in the existing space and was replacing an older GE model which had older style knobs.  Getting use to the touch controls.  Limited use thus far, but seems to work well without apparent manufacturing defects.  Stays clean using glass cooktop cleaner 1-2 times per week.   If this model proves to be reliable, I would say it is a good buy for the money