I am buying a bunch of ethereums , neo, and eos, those are still my favourite coins and taht is the main reason of why i am buying a bunch of them. Stellar might be a good coin too, but i do not trust on this huge pump at the moment.
Investing in altcoin at this stage is very risky because altcoin is being drastically reduced due to the money being spent on Bitcoin. If you invest in altcoin then I think investors should trade short term because every 24 hours every altcoin fluctuates around 10% and that's your chance. Remember to always have a stoploss score so you do not lose money and save capital.