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?
BTC is the fastest in term of exchange but it is more expensive than ETH which have a cheaper payment but just a little bit slower with regards to a blockchain transaction , so I choose ETH coin .but If ever I have plenty of coins with high value , I think I will for BTC exchange for sure .