I would have to pick the top 3 Altcoins for 2019 or for the future investments. Like Ethereum, Bitcoin Cash and Bitcoin Gold.
Bitcoin hard forks are not joke and scam thing to me because they're created to have a purpose and I bought Bitcoin Cash a month after the split while it's cheaper and now they're stable and pumping.
In my opinion better chose coins from top 50 or even 100.
And I like to chose coins from Coinomi wallets. There are about 80-90% that rising up. You can just buy this coins and wait 6 months for x2 or even x3 profit!