Ethereum's two-tier and three-tier technologies are becoming more and more mature. The opportunity of industry transformation still lies in Ethereum's layered technology. It should be proficient in two-tier and three-tier technologies as familiar with bitcoin technology. Bitcoin is very stable and unchanged. It is the best investment. But I think Ethereum is more fun.
There will be no room for fun in economy. Bitcoin is a serious investment opportunity and also will act like a serious momentary system where ethereum is kind of platform for hosting smart contracts. There are lots of differences between these two hence I never agree to compare these two cryptocurrencies.