As sad as it may seem, most of what you have said is not applicable to the average Joe looking to buy cloud mining power and not get scammed (i.e CEX at least is not a scam and is very reliable in that sense). Also there is still nothing quite like it the trading platform is awesome.

Having said that though please do check your PM.

EDIT: if anyone wants to read our (highly controversial!) CEX review they can do so here: http://cloudminingreport.com/reviews/cloud-mining-bitcoin-namecoin-devcoin-and-ixcoin-with-cex-io/