Cadbury's Milk Chocolate in the UK would be fairly representative of UK chocolate. I can't for the life of me remember whether the US version is the same though.

I'd agree that some US chocolate tastes waxy, and some just tastes nasty (to me). But that's in line with other US candy. Whoever thought that candy that tastes like smokers toothpaste would be appealing was wrong. It really bugs me when I don't expect it - there I am enjoying a pack of candy, a multititude of pleasant flavors delighting my tastebuds and all of a sudden they're violently assaulted. It's just not right.