Snickers. From the fridge. Makes it good and chewy.
- Big Hunk
- Reese’s Peanut Butter Cups
- Reese’s Pieces
- Peanut M&M’s
- PayDay
Unfortunately, only Peanut M&M’s are widely sold in Japan. 
Any Cadbury’s egg is a good egg. Creme, caramel, mini… every Easter when I was still living in the States I’d keep an eye on the local CVS shelves and grab me some heapin’ helpin’s of Cadbury eggs.
Oh, and a properly frozen Charleston Chew is a delight second to none.
Twix PB. For some reason only my local Wal-mart has them, and only at a few of the registers.
Even better, though, are the honking big slabs of chocolate we get at Aldi. They’re $1.76 for a half pound bar, they claim to be a product of Austria, and they’re called Chocoeur, which I’ve probably spelled wrong. They have hazelnut paste listed as a primary ingredient, and they’re smooth and delicious and full of awesome.
A month or so ago Aldi had them on sale for $0.50. It was like Christmas had come early. 
I gave 'em up for that very reason. There’s just no way to tell until you bite into it and mess up your teeth!
Awesome, but you’ll have to hope for a cool Halloween…they get melty so fast! Breasticle heat will be your undoing.