Long term seems like cyrptos are moving away from Proof-of-work, so I would definitley say trading. I'm also biased though because I've made a lot of money trading :) Check this out if it interests you regarding trading data: https://steemit.com/steem/@weilii/introducing-the-neux-oracle-steem-and-bitcoin-trade-signals Just started following you, would appreciate a follow back if my price analysis content interests you as well :)