⚡ Quick Verdict

Overall Winner for Used Buyers: Honda ADV 350 — It delivers a larger engine, superior fuel economy, modern scooter convenience, and stronger long-term reliability. For most commuters and weekend riders shopping used, it simply offers more usable value per dollar. The Versys-X 300 fights back hard for those craving an authentic adventure-bike feel and twin-cylinder character, but it's a narrower use case.