As a person who have tried a lot of cloud minings and been in the cryptocurrency field for a while, I can see that among all cloud minings, there are only genesis-mining, hashflare, hashing24, bitcoin.com whose reputation and truthworthy is highly recognized.
At further analysis, regarding profitability and ROI:
- Hashing24: the customer service and payout is the best here, rarely they receive complaints and customer negative reviews for their services. However, the rate is too high, cost per TH/s is a few times higher than Genesis Mining and Hashflare. This is the reason why I didnt invest in their services.
- Genesis-Mining: the longest operation period with highest trust rate online, the firm runs with the most transparency in term of operation and mining facilities. Reasonable payout (having delayed payout issues recently) and profit rate. Their cost is decent with the lowest maintenance fee, I would say in term of long-term profit, Genesis Mining is the best. I used them for a while and recognized their potential investment. Longest mining contract for ETH, Monero at the moment.
Recommending: ETH mining, BTC mining.
- HashFlare: not much for saying, they started later than Genesis-Mining but already proved their standing. The customer satisfactory is only 2nd after Hashing24, maintain regular payout and profit rate. Furthermore, the cost per TH/s is the lowest among all with average maintenance fee. With the situation where mining difficulty is rising, I would say this is the best for short-term investment. I personally rate their bitcoin cloud mining will be the MOST SHORT-TERM PROFITABLE. However, their demerit is only 1 year contract for other AltCoins at a little rate cheaper.
Recommending: BTC mining.
- Bitcoin.com: I can say they are the MOST TRUSTWORTHY cloudmining since they developed this new function based on a previous bitcoin news official page. They provide a lot of packages for customers, but I recommend the 6-month or the popular package. Their rate is quite high compared to the above 3, so your ROI may come a lot later and not so profitable, however, if you can invest and be patient long enough. This site worth a try. I personally do not choose this site for my investment.
GENESIS MINING: 3% Discount Code: kZcYT7
HASHFLARE: registered here for extra 10% discount (only for new users): https://hashflare.io/r/C367CAAA