Only invest in what you belive. Maybe in steem power? Why steem Power? Because there will be more and more users in futer. it will be harder and harder to receive some valuable
upvotes. You earn money for every upvote :) So it looks like to be the best investment. You get and also receive money. And one day you will have the same amount of money like you invest. and your future upvotes will be your income :) Think about my friend ;)