cloudmining 101 is a good thread to learn more about cloud mining and be prudent.
Just wondering, don't you have any proof that they pay well ? Because the only thing I see about them over the internet is 70% scam and 30%... ads ?
Some cloud minings went bankrupt or run with the money. As a result their former clients are now trolling cloud mining threads, calling the whole idea a scam.
I don't know if BCS is legit or not, but cloud mining isn't profitable at the moment and there are as many scams as legit operations.
The same can be said of most other bitcoin investments.