Both of these offer different advantages:
Bitcoin is the safest cryptocurrency and has reached the widest audience.
Not to mention holding a third of the entire market's value.
Ethereum is right there with it, holding second place on the ranks.
DApps, DAOs, and Smart Contracts changed the game.
So where do you bet your chips?
BTC or ETH?
In my own point of view, i look in these two coins as a good coins for investment, i am not particularly using it or anything else but i bought it for trading purposes only, and my bet is always bitcoin because this is the safest investment. ETH is also good and if i have extra more money to invest, i love to buy also this coin.
Bitcoin is already strong and continues to strengthen it is able to shift many coins including Ethereum. so we need to maintain Ethereum's position to continue to be a pretty good coin for the future. besides that, we need to support Ethereum to become Altcoin mainstay in order to compete healthy with Bitcoin.