So who is buying the S7?
I think it has too little power. I thought it would have around 10 - 20 TH/s. But okay, it has the new chips.
When is 16nm coming? For me in Germany it is hard to mine with those prices for electricity... :/
And what kind of circuit are you going to run a 10-20THs miner? Remember, the S7 is aimed at the home miner.