I think you'd better invest 2 ethereum. Ethereum is one of the top altcoins in which ethereum has the best quality of transactions. The price of ethereum was relatively stable. Already many large investors are interested in ethereum. They invest and trade, both large investors and small investors. With its own platform, ethereum is getting better and more popular around the world. Ethereum became one of the altcoin destinations for big business use. So I think you better invest 2 ethereum, compared 15 NEO. and even if not, ether is still growing faster than NEO.