I agree, it's "both."
Pressed to choose one, I'd say...um, it depends. Depends on who's eating it and if they're going to be spending the rest of the evening in close proximity to me.
I prefer the beans, though, unless you're talking potatoes with all the goodies like peppers, onions, and cheese! Yum!
Love those J'ville brats. My favorite is Honey Barbecue.