Top 3 altcoin worth your investment now is Ethereum, Cardano and NEO. Ethereum is the queen of crypto, it has solid foundation, a lot of ICO uses Ethereum. Every day ETH has a huge trading volume. Cardano is very promising, it has good scalability. It overcomes many weaknesses of BTC and ETH. Indeed Cardano is worth the investment. NEO is dubbed the Ethereum of China. It has a professional team and a large community. Long-term investment in NEO will bring us much success in the future.