In my opinion all are just scammers. I invested 100 dollars in hashocean and after two weeks it just disappeared. I invested 600 dollars in one famous cloud mining after reading good reviews about them .For first 3 months ok they paid me well and after that their payout decreased like anything. But they are paying me still. I think it will take another one year to reach ROI. The funny part is that the payout that now they are offering me is what I can easily make it by claiming faucets everyday. In my opinion if you want bitcoin, just get a bitcoin from any reputed exchange with your money and keep it with you.Definitely you will get profit you buy and keep bitcoin with you now. I am now regreting for investing in cloudmining .
Only legit one is hashnest but roi in this website is very low and it don't worths to invest low money here, plus there are always risks. Mostly cloud minings are scam, only legit one is that. And don't hope that you get roi from your 600$ invested website, maybe soon they'll dissapear.