I prefer Ethereum because the coin is more well established in the financial market and has been incorporated by big companies like Microsoft, Intel, JP Morgan. The coin being the second most popular crypto right now, holds a market capital of $23 billion. The coin has an exceptional blockchain, successful projects behind it and one of the best development teams behind it. The coin can be used as an investment asset, for transactions, as a platform for posting new ICOs and also as a token for smart applications. It is a great coin which presently has the potential to cross the $700 mark by the end of 2018.