Which mining companies are recommended now? and does others use Amazon EC2? I'm renting for m7m algo, need some opinions for others tested mining rigs.
There's only 2 worth considering:
1. Bitmain has the price advantage.
2. Spondoolies has the quality advantage.
IMO Rockminer is a great company as well. The new-rbox is great for hobby miners, GREAT!! I bought their old R-box and liked it a lot.