Altered Beast for Mega Drive in my opinionAnd when I say superior I don't say "arcade perfect" (since it was easier around the Dreamcast era) but ports that added features that improved upon the game (regardless if it unbalances the game).
Modern compilations are just arcade ports without any new additions which is a bit too bad when back then they were willing to add new content to compensate for the fewer animation frames or background resolution.
Edit: And Double Dragon for NES