For me, I will keep invest in BTC, because it is familiar for me than other cryptocurrency ...
That's not really a lasting approach..
For me, I will choose ETH at any time. The use-cases of ETH with ERC20, smart-contracts etc. is simply those of BTC superior. Pretty sure its market cap will overtake BTC in a year or two. But then again, if people only invest in coins they are familiar with (bitcoin) this won't hold...