I would rather go for btc not eth. I prefer BTC more than ETH. I think BTC is more suitable and also more reliable to me rather than ETH. If you see the past history of BTC then BTC is the most oldest crypto currency throughout the world. Day by day it's gaining trust and also it's creating a new hope of earning. In case of investment I think BTC is more profitable. BTC value is less now but the price will go high undoubtedly.