Maybe both of them has their own uniqueness and cannot be compare to each other. During the past few weeks, the BCH exchange rate has increased by as much as 200%. Some people say that bch is just a regular viral phenomenon. I was never a big fan of BCH and in the future also it may remain the same, but it is impossible to ignore such a huge spike. I guess I will choose btc for the remain best. I think both are profitable and secure. Investing in Bitcoin will be better because it is hailed as a king and investing in them is profitable. In addition, eth is very good too for long term. And I wish I can collect eth and btc more before the pump price.