Bitcoin could fix itself and come back into my portfolio but I doubt it. They are betting it all on the Lightning Network and I don't like the way it centralises things with payment gateways.
If you asked me a month ago I would have said BCH but I'm not seeing the trading pairs for BCH. Binance and the new alt-coin exchanges are all adding ETH trading pairs. I think the market has spoken for now and ETH will be the new king in 2018 until its own scaling issues come to a head.
ETH 2018 would be very nice