if you want a investment in altcoin, beside bitcoin I think ethereum still best altcoin to investment, because ethereum still in rank 2 after bitcoin. So ethereum is reasonable to invest beside bitcoin of course
Now, the crypto society is waiting for the growth of Ethereum as futures are going to be approved. Probably, if I had enough money, I would spend it on ETH. This is the cryptocurrency I do trust.
The other tokens which are worth our attention are Stellar and TRON. OmiseGO seems to be a very promising altcoin. There is a great probability that the market will grow, therefore, buy crypto now.