My opinion of plastic foundation is overwhelmingly positive. Here in Alaska I have yet to see any drawbacks to its use. It may be a bit more expensive initially, but with spoiled, or broken, sheets of foundation counted in the cost evens out. Over the long run I believe that plasic is cheaper. I have been using it for several years. None lost to date. I am converting entirely to plastic foundation as I replace comb. Tom Elliott Eagle River, Alaska [log in to unmask]