They are the Factory or Supermarket to the world. Cheap things come from there. We need $10 for 1 gh/s or less.
Go with the cheapest of course,
but don't support anyone who mines on anything but testnet. KNC has claimed they won't mine with what they develop.
Please think it through. To say otherwise means you don't understand how the growing hashrate and difficulty works against small miners. You will only be hurting yourself.
You will make less for yourself @ $17 GH if they are also developing hardware to mine for themselves than with someone @ $17.50 GH who only uses testnet and isn't mining with your hardware. End of story.
Do not support China.
If you are referring to Avalon who is also made in China and has been accused of using customers miners for their own mining adventure that is wrong and unethical, but Asicminer is a share venture so the hash rate are somehow distributed among the shareholders. Is they anything wrong? The fact they are increasing the hash rate dramatically is somehow concerns us. But cheap things comes from there. They are in Walmart, Kmart, Target and those tom, dick and harry stores who keep stocks of China made products.