Eth looks very promising right now. It has shown a lot of growth since the past few months and will hopefully continue to grow till the end of this year and continue its rein in 2020 as well. BTC is the real competitor of ETH in this game, as it is the number one right now and ETH number two. BCC might be a good product, but it is just a clone of Bitcoin like others, but ETC has provided the investors with a real platform and also its services.