I do not think any coin can beat easily bitcoin but if it does it will probably be Ethereum. Ethereum is very strong project with a bright future. I believe in it. And I am also hol Ethereum for long term. I dont think that I would sell them in near future.
But Ethereum is far away from BTC. So we can not say that ethereum will beat BTC. It may take a few decades, because the BTC value is too large for Ethereum now.