Product review (3 stars): For light duty only, otherwise the parts melt
We have used and abused this cooktop for two years and have overall liked it. It's easy to install and is fairly efficient and easy to clean.  HOWEVER, there are some safety issues with it: if it gets too hot, say you simmer something on the stove for a few hours or can food on it, it melts the burner parts!! There are NO REPLACEMENT PARTS ANYWHERE. The burner still works but it gives out too much flame and very inconsistently, as well as you can no longer regulate that burner. It is always on highest setting no matter where the knob is. This wastes propane as well as just not being safe. One of the small burners refused to light a couple months after purchasing it and because of the lack of parts available, we just can't use that one which is somewhat inconvenient.

I think if you are going to use this for light purposes or you don't cook a ton as I do, this would work well long term.