Best: Ferrero Rocher
Quite expensive, but soooooo good
Worst: Hands down, TWISLERS. Why are they not out of business yet? Absolutely vile!
Oh yeah... I was thinking best/worst CHOCOLATE, but you're right. Twizzlers are chewy red wax.
They still make and sell them, so SOMEBODY must be buying them. They don't stock stuff this long when it won't sell. But I don't know who's buying them... and I'm not sure I want to know.
If you like ferrero roche, try the Five Star Chocolate Bar (hazelnut version) from Lake Champlain Chocolates. It looks like a high price for a small bar, but the bar is bigger than it looks. The shape is like a h*rsh*y (that's a dirty word for chocolate lovers, that H word) nugget, but the size is like eight or ten of them put together.