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.
Why do you say 2 months?
On my u2cloudmining system you can get profit in less time and the specificity is that you have invested only a little of your time.
My system is now running for over 1 year and if you follow the publications (because all is clear on the site even if few people here say it is confuse) you can see that members like even re-invest or claim free vipshares.
My free system is so genious that it looks like a scam...and many people here wait wait wait and wait to see that it is a scam...
But the site keeps up paying and paying...and the detractors have just the eyes to cry...(lol)
One can not go against the progress...U2 system is a new system.A system who can not collapse.
I will collapse (and unfortunately you as well) before the U2system...
Why do 99.999999% of cloudmining turn scam?
Because their system is bad and the webmaster scammer.
If you have an economical cloudminining system and an honest webmaster it will never collapse and you will never be scammed.