I can only speak from experience on chocolate mint and spearmint.
I will say that chocolate mint carries a definite overtone of dark chocolate.
My favorite desert combination happens to be mint and chocolate, so this seemed like a match made in heaven
. Made delicious tea.
I'm VERY interested in that "piss off" plant. I've heard marigolds help deter pests, but I didn't know there were plants to annoy animals into other areas. Mother Nature is brilliant.
Today I caught the cat fiend eating my winged elm bonsai. Much squirting with the spray bottle forced Hector (the cat) into calculated retreat... after he devour half the foliage.
*restrains urge to kill (deceptively) innocent creature*
I'm thinking pet grass and a combination of "piss off" might do the trick, if that works on cats