I'm pretty much a nut for any candy with peanut butter. Here's my list of favorite candies:
Butterfinger
Reese's cups (even with the peanut butter and chocolate REVERSED, and with cookies inside!)
Reese's pieces
Twix (the peanut butter kind, of course!

although the caramel's good too)
M&M's (peanut butter again...)
3 Musketeers (one of the few non-peanut butter snacks I like)
There are other candies I enjoy, but not enough for me to remember any right now.
As for popcorn, I guess the taste depends on how they're popped. Besides, almost nothing tastes the best from the microwave...
And as for caramel, I only like it in certain candy bars, with plenty of chocolate to add. What I hate worse in candy is coconut, which I like only when toasted and on an actual meal.