The best cloudming websites are for me not even relevant anymore because of the fact that these websites are mostly ponzi's..
I don't think cloud mining is legit mining sites nowadays because most of them were scam and mining actually is not profitable these days because mining hardwares consumes more electricity, and you only mine less efficiency due to it takes long hours to mine and yet electricity is expensive for those hardwares.
Yes cloud minig sites are turns to be scam in the long run and also the ROI is not that good there are some cloud mining sites you have to wait for two months for you to earn some profit.