I am always amaze every time I imagine how much power does Ethereum blockchain has when processing transaction for every tokens it supported. There are millions of transactions are being process every single day. Just do the math. Decentralized exchanges using ETH blockchain plus online wallets like MEW, Jaxx, coinomi, Eidoo, etc. I always have this feeling that ETH will become number 1 someday. Who is better for you? ETH or BTC?
Thats right, in my experience ETH is faster and cheaper than BTC. But to replace BTC i think thats very impossible, because as we known BTC is the main of cryptocurrency.
ETH actually used for the main transaction and the main platform of the most ICO, but it never can replace BTC. In fact all prices of altcoins depends on BTC. If BTC prices falling down ETH also will follow it.