Both of them is a great coin to invest, but for now I prefer to invest in eth, eth now in a low price and the potential to rise is still big, bitcoin price is quite unstable and the chart showing that it got the chance to go down lower again, investing in a cheaper coin usually will makes more profit
I agree with you, but it doesn't close to not investing in bitcoin, because both of them will be told to do hardfork together. this is the momentum for the two coins