As of now, I honestly can't think of any that has that capacity, marketability, much less price point to beat Bitcoin. Bitcoin is such a big name in this market that it's very hard to overcome it. It has been present for a while now, and it has shown people lots of characteristics for them to believe and trust in it. Some may have shown good trends like Ethereum and Bitcoin Cash, but they still both have to improve leaps and bounds before any of them can be dubbed the altcoin that can beat Bitcoin.