I'm waiting for the announcement and proof that they have working prototypes hashing at X GH/s and using Y watts. If they can demonstrate a good product at a good price, I'll consider buying. Otherwise no.
you know that is impossible.
if there is 100% working product it can only stay on the shelf with ASICminer prices, or sell out in seconds
that is why the gamble on pre-orders brings the price closer to normal ROI. it is left up to you to drop your cost-basis as much as you can so you can profit against others doing the same
My point was that Cointerra hasn't shown they have a working chip, much less a working system. So the risk of failure remains very real.
KNC, using a different example, *does* have a working product so the risk of a failed design is gone; the only thing left to consider before making a purchasing decision is price and delivery. BitFury and the BFL 65nm line are also in this category. Cointerra and HashFast are not there yet.
Sure, I like what I've seen of the Cointerra system, but until it's out of the vaporware stage I don't plan to do anything other than watch. My choice; YMMV.