Mostly, I like high-cocoa-content chocolate (70-83% or so - past 83%, it tends to be too bitter for me to enjoy). Almonds can be good, but I'd probably rather have dark-chocolate-covered almonds than a candy bar with almonds. Dove dark chocolate is good too, for sweeter chocolate.
For mass-market/supermarket candy, my hands-down favorites are the dark-chocolate versions of Reese's Peanut Butter Cups and Snickers. I can only take milk chocolate when it's combined with something else - the $100,000 Bar is good, once in a while, I can use plain old Hershey's Bars in s'mores (though I like Dove dark chocolate squares for those, too).
Every so often, those liquor-filled chocolates are really good. About once a year is plenty, though.
