CCG Cloud Mining - Bitcoin, Ethereum, ZCash, Litecoin, more

If you are new to cloud mining or looking to expand and try another company I'd recommend CCG Mining.

They do offer Open Ended Bitcoin Contracts - and they also have a cool Profitability Calculator when deciding a contract that shows how much you'd earn:
Per day
Per Week
Per Month
Per Year
All based on the current Bitcoin price and difficult level so obviously those estimates can and will change.