Of course it's ETH! This currency has a great future: they have good developers, and almost all ICO projects are launched on ETH
Yes, thats right. Everyone supports Ethereum. I do see some people claiming that Ethereum is even far more better than Bitcoin in its features, but I dont believe that, Bitcoin is better, or maybe its being seen as the best because it was the first cryptocurrency. Another coin I like LTC (Litecoin) if you mention the first twenty, I believe it will be on the list, cause its position is around twelve.