Product review (4 stars): Aside from one silly flaw, an AMAZING cooktop
I've had this for almost 2 years. I, like many others, had burner shutdown issues - but in my case, the root cause was actually a thermal safety feature. I would always/only get burner shutdown when using my cast iron skillet on the center burner to cook steaks/roasts/etc.

The problem with this is that the skillet gets *very* hot and doesn't cool down really at all when the meat is being cooked. Indeed, this is exactly WHY you use a big cast iron skillet - it retains the heat.

After 4 different visits by GE service (and replacing basically the entire guts of the cooktop), the latest technician realized what was happening. The skillet was radiating a ton of heat back into the cooktop, and the cooktop was seeing this and determining that the skillet was "empty". In other words, there is a "feature" of these and all GE induction cooktops called "empty pan detection". I was triggering this every time I used the skillet.

I'm definitely disappointed this happens - and even more disappointed that the cooktop couldn't give me a hint as to what was happening. No fault codes. No warning. Not even a beep. That's pretty silly.

So why still 4 stars? Because other than this silly empty pan detection "feature", the cooktop is SO much better than any other cooktop that I will never go back to anything else. Boiling water in 2 minutes flat, "sauce" mode, sous vide, etc. Amazing.

Also, I will say that GE service has been amazing. Only on this most recent visit was I charged anything - $99.

UPDATE: I've determined that the thermal shutoff / empty pan detection kicks in around 750 degrees. Obviously a much higher temp than most pans will get, but a big cast iron skillet can do it. I seem to be able to avoid thermal cut off by placing a silicone sheet between the skillet and the cooktop, but silicone can't handle more than about 600 degrees. Next idea is a thin ceramic disk, which should act as a good insulator and won't impede the magnetic field.

UPDATE 2: Ceramic works! I purchased the thinnest ceramic tile I could find at Home Depot (16 cents!) and place the tile under the skillet. I was able to heat the skillet to over 850 degrees and kept it there for almost 20 minutes! The top of the tile got to about 750 degrees, but the bottom never got above 500 degrees - which is well below the thermal shut off. So I would say - problem solved! It's silly I need to do this, but the cooktop is so good otherwise it's worth a little experimentation.