ya, bit-x is really good and trusted,but ROI is very slow, but hashnest? i have bought 100gh s7, now price is so low, that i need to sell 200 gh to get my investment back, price is falling down every day, i think its impossible to get ROI from them, also i cannot withdrew my earning, i have google authentication problem more then 3 week and no one is not helping, i have opened many tickets, have written here and on bitmain forum many posts, email them also, tried contact from skype, but no answer. i dont know what to do now:(
A somehow legit cloudmining offers really a slow ROI or it depends on the amount of hashrate you bought. Out of the topic but for newbies, if you see some cloudmining that offers really high returns in just a small period of time, then think twice as it can consider as ponzi and hyip scheme.