Try this:
http://www.nsxsc.com/nsexcitement/waxtest.html
I like the way they did this test. With even more products it would have been more interesting.
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MICK - C3VR Lifetime Member #113
To me they should do all the waxes together. This way they will know which is better.
Most of all. They need to collect each MSDS of each wax. This way will tell the individual what they use in the wax and just what might be better for a curtain color and/or weather related area.