Seeing the current scenario, which one of these can be the currency of future which will be acceptable worldwide?
Ethereum is one good coin that has been created,the only problem is theres no updating happenings on this part,while Neo is a Chinese ethereum and only moving when china is making some issue for the market to panicked or rejoice.
So i believe that its ethereum will be the best among thoe two but not enough to take bitcoins place being top one