I know many on this forum have been burnt by preorders, but I thinking thats about the only way to get a good $/gh ratio. I preordered from knc and was happy with what I got so I feel that there may be some others out there worth supporting.
It's the way to loose money. On 1 side you can have good $/GHs ratio at the time of order, on the other side at the time of shippment (probably late shippment) this ratio may (will) be obsolete.