Maybe a good service & review, but we need first to verify if the sites are trustable, especially for cloud mining, because in the last time there are many fake/scam sites.
Better to check this sites if it is really secured because i have experienced that there are sites like this who gives another link that will lead you to a a phishing site, i was pissed off that time, not just only phishing site it has given my computer a virus called copy paste
everytime i copy my btc address it paste a different address,
Mr.OP i'm not saying that you give untrusted sites, i just want that the visitors must double check, since internet has so many unsecured sites.
Thank you for appreciation.