I should do a comparison between the Poly Wax and Wolfgang Exterior Trim Sealant on the trim of an abandoned old 3 series BMW at our shop.
A while back I had applied both to a spare Audi grill I had laying around and threw it on a shelf. Going back to it, I can't remember which spot had which product! The E46 out back would be a better test though, as it's got full exposure to the sun. The hood is currently undergoing clear coat failure that wasn't there when they brought it in.