To hold the best for the time now, choose ETH, because this coin is quite potential, maybe only in a short time this coin up to 1000 $. And that is the opportunity for us to sell and take profit
Holding ETH for a long time is my top priority as I am sure the $1000 price will happen again and things will become more stable if the market enters the uptrend. What you need to do now is hope for a new future for Cryptocurrency as it is about to happen again in 2019.
prioritizing ethereum, and ripple might be one of the right options besides bitcoin,
I have nice spread of coins which I believe will be part of future economics. Amongst them are BTC, EOS, ADA, STRAT and more...
I think BTC will stay as a currency, because so far it doesn't have competition strong enough to overthrow it, and with Lightning network it will become more energy efficient and reduce influence of the miners.
As for smart contracts platforms there is big competition and thats why I have so big spread of coins to hodl.