That coin flatlined for years. What happened and how do you know it won't happen again?
OP: It depends if you want safe or risky. Safe: ETH, NEO, maybe LTC. Risky: Buy whatever is getting shilled the hardest. Right now that's VEN.
with the ever-increasing development of Altcoin bringing coins into highly reliable coins and becoming high-level in long-term profits and for investments that generate even greater profits in the future and provide improvements to Altcoin's development such as Ethereum.