At least CEX is actually mining something in plain sight. With GAW, the whole thing is basically a black box that you feed in bitcoins and receive some fraction of your investment back daily.
Profit with GAW may be good, but the opaque nature of their operation is not something I care for very much these days.
I don't care for the way CEX ripoff the cloud miners "In Plain Sight" by charging more in maintenance than what is rewarded.
I tried them with 150GHs for 24hrs and had less balance at the end than the start. And that is with CEX getting about 25blocks for the day.
Not good CEX, you've lost my vote for good. CYA.
I cant comment on the other cloud miners, but im definitely going to look into them instead of wasting BTC on CEX.
Just my opinion either way.