Even though I would never buy cloud mining (I mine with physical miners) AM is probably the best one out. Not sure you would ever profit just buying a contract and holding, but if you buy and trade at the right time it could be a good deal. Good luck to everyone that goes this route!
For the vast majority of people, AMHash is less expensive than owning a physical miner. The initial cost for 1700 Gh/s is cheaper than an SP20 (which tend to only do around 1500 Gh/s) and that's excluding shipping costs, import costs, local taxes and PSU cost. Also, AMHash maintenance costs are equivalent to running an SP20 with electricity costs of 0.1 USD/kWh.
I had a few physical miners, gen2 BFL, and i can tell you that cloud mining is profitable only if you can recover/sell your investment, beyond that point, even a satoshi is profit.
Gen2 BFL and PBmining. OUCH! I started mining on my CPU and I've heard people say that mining is unprofitable since GPU mining started to pick up steam. They've always been wrong. I think when people say that mining is unprofitable, what they actually mean is that it's no longer a get rich quick scheme.
