Minus the obvious BTC for the looong term win, I'm going long on:
(1) Sia
(2) Dent
Here's why:
(1) They're both really cheap right now
(2) They both seek to unsettle massive players in established markets. Sia is smashing cloud storage players and DENT is disrupting data strongholds in mobile
(3) They are already delivering fantastic products
What are you long on, and why?
Well the only cryptocurrency that I would invest is only Ethereum. Its price is so cheap at the moment and I'm sure it will rise high again on the future because there are still many projects that are using its own platform.