So I have been with Hashflare from 2016 and I don't remember how much I put in it actually. But I do know that I have broken even on Hashflare in August 2017 and I am getting my profits right now.
As for Crypterra it's a bit risky as its a new company. So I have gone and bought 3TH/s Mining Power to check things out. Since its minimum withdrawal is 10 USD I have been getting paid every second Day.
Right now these two are the only ones with available Hashpower.