you should it choose ETH and XRP for your investment rather than BCH, I see that so far Ethereum and XRP are good coins and they are in a good position in under bitcoin. but it all depends on your decision. If you believe XRP and BCH is a good choice, then don't hesitate to invest.
Do you recommend ETH only because of market capitalization? that might be good but we also have to look at the history of the prices of BCH or ETH, the difference between the prices of BCH and ETH is now not much different, so BCH is falling too deep if compared to ETH, and of course if both go up, the benefits of BCH are greater than ETH .
and for investment, profit is the main goal, and BCH has it.