I had such bad luck with CEX and roi that i am turned off to cloud mining but I hear good things about hashnest - maybe give it a shot
thx for the warning on early fee's thats probably something they should make very aware to people so they dont panic.
It was very suprising to me too, watching the value I had in there go down (when I bought an antminer s5) and an (antminer S3) with 1 GHs from each, and the 24 hour earning went to ~-0.00001000 after about 2 minutes.
I recently went back an bought 40 s3 GHs contracts and 1 GH S5, went to around -0.00010000 but quicly went to a positive figure,