How can there be any cryptocurrency which is better than the Bitcoin?
Bitcoin is the original crypto, while the other shitcoins are shameless copycats. A few of the altcoins, such as Litecoins and Namecoins can be trusted, but they by no means are superior to BTC.
Bitcoin is the original one, doesn't mean it is the best.
We all know that bitcoin is not perfectly, there are some coins really improve bitcoin.
But as the best, I think there is no best, just better.
Bitcoin is having some minor flaws, such as the 51% attack issue. But ever since its creation, none of its flaws have created any major problems for the users. And it is likely to remain as such in the near future as well.
I agree that some of the altcoins have been created to remove these flaws. But there is no need as of now, for a "perfect crypto". Bitcoin will do the job, even with all its minor bugs and defects. If we adopt a technologically superior coin, then what will happen to all those Bitcoin-based businesses and ventures? They will be left with Billions of USD in loses. Let's just stick with Bitcoin.