The main answer which is still not answered by anyone is that how much profit MASS can give you at the moment? I can make a decision after getting a satisfactory answer to that
If you really wanna know about that answer then I tell you dont waste your time here rather go and join there telegram group. There TG is very active and you will get to know how much MASS you will get for specific HDD. I got the answer but its 6 months old, so it wont help here. Please do post what answer you get for benefit of all.