I prefer the american versions of Kit Kat, Reese, etc because they taste more chocolatey somehow and less sweet. I visited family in Canada and tried some Hershey bars there, too overly sweet and missing vanilla... I also tried Cadbury and found that to be too sweet again, and also lacking that vanilla twist. I brought some real Hershey bars more recently and everyone agreed it was much better! Some said it's what Hershey Kisses used to taste like in Canada until they started making them different (presumably to be cheaper), so I tried Canada Kisses and yeah, again missing the vanilla and too sweet.
I do like coffee crisp though which we don't have, but that's about it.