I've been with Hashzone for about a month now. Initially wanted to sign up with Hashflare but they raised their prices.
Noticed they're giving away, for a limited time, 20 GH/s free with new accounts to boost confidence in the platform. Additionally, their rates are slightly lower than Hashflare, and they have a great support team. They're based out of Amsterdam NL. Though I'd share.
If anyone is interested, check them out: https://hashzone.io/?ref=126775