ASIC mining contracts absolutely worked for me. I have been mining on my own and with the group buys since 2013. Lost a lot of money when group buys didn’t get delivered the promised and paid for mining machines from black aero; and made some too.I bought a btc contract from ASIC and it paid off it self hamdsomely. Betting on the c…Read MoreRead more about review stating Ether 40 Mhs contract