I'm kinda newbie, so really need a quick answer, cex.io is legit or not?
Trading and buying BTC, yes they re legit. They do not offer cloud mining anymore.
Not quite. They still offer cloud mining but it's suspended by default (due to no profitability). Afaik you can still unlock it and mine at loss if, for whatever reason, you wanted to.
On other subject, mintsy.co is in beta (pre-enrolled users only though), I wonder how would they score.
Minsty.co is the most expensive cloud mining I ve seen so far. There s no way anyone can ROI on that ATM.
Hashnest is a nice choice, Bit-x s a bit pricier but still a nice alternative. Another option is to switch to poof of stake coins, it s similar to mining but no cloud operations needed, no electricity costs. My favorite proof of stake coin is DMD Diamond, 50% annual interest.