Ahhh candy!!
I love the Ritter Sport bars, particularly the milk chocolate one.
I love the Aero and Cadbury Flake bars as well. Got hooked on another thing when in England and I cannot remember the name. Its a chocolate egg of sorts and it comes with a tiny little spoon (not quite liquid center, but soft enough to require the spoon).
As far as easily and readily available in America-- I can usually find my Ritter in Wal-Mart--- if not, I have a friend who can get them on the Commissary at Ft. Hood. I also enjoy Toblerone.
Now-- as to my fave. I love my own. I am a hell of a candy maker. As to store bought? I love the Rafaelo coconut things with the milk creme and almonds inside.
Lol-- now you all know why I am not a spinner!!