I gave my vote to NEO. The current price is undervalued and if you look on its all time high, that will give you 27 times return of investment and that might happen this year or by next year. Who knows right? The bulls can attack the market anytime but still, it was just my advise so it still up to you which altcoin you wanted to invest with. Besides, NEO is a chinese ethereum and their team members really are reliable to upgrade their network.