I don't know about Air Zonk (the TG-16 version is too pricey for my interest), but I hated just about everything about Bonk's Adventure, mainly the slow, maddening controls and awkward hit detection that make the flat levels that would otherwise be laughably easy infurating.
Back to the question at hand, if you have 800 points when it finally gets to the Virtual Console, I would definitely recommend Ys.