Hashnest is the best in my eyes because they are having a nice system, there payouts are good and they also are very trusted here on the forum by a lot of users.
They are trusted but rising mining difficulty makes the payout smaller everyday and their GHS worthless every day that passes. So in the end no good or profitable mining exist at all at the moment. Maybe but only maybe when S9 comes into play this will change at least for a few months but until then, rest assured all of the cloud minings are not profitable, even legit one like Hashnest.