Well, Ethereum vs NEO - I better pick NEO over Ethereum because NEO is more faster than Ethereum and although they're both good coins but NEO is an underdog but a better player and threat against Bitcoin.
5K Dollars is a lot of money but if you're going to invest it into NEO then you could earn more profits than investing into Ethereum, just in my personal view and understanding that NEO could surpass Bitcoin's market capital soon than Ethereum.