This may cause a bit of controversy but the Peanut Butter Snickers is the perfect candy bar by far, even surpassing the Reese's Buttercup.
ITT: I remembered non-Americans don't slather everything in peanut butter like we do. We do, like everything. Almost as much as we do cheese.
I've had to limit my candy bar intake as I've aged (sadly), so I might be a bit rusty. However, Reese's is overrated. It's too sweet, and Snickers has always tasted too artificial. If you have to go peanutty, there are better options. Payday? Almond Joy? A fuckin' Abba Zaba?
I can't stand any of them (full of sugar and chemicals..eeew!) but there are some organic chocolate bar snacks that are OK.
I take high THC cannabis oil to kill cancer cells, and also nibble a bit on chocolate peanut bar edibles, so I suppose I do eat them, in a way. I have to be careful, though, especially with the edibles..medical cannabis is powerful, and can knock me out.