I just noticed this morning the Euro BFSB has new stock if anyone is interested.
http://www.bitfurystrikesback.com/shop/Bitfury chips are still some of the most GH/W power efficient on the market.
For anyone new to mining without a 28nm budget/pre-order I would suggest old Bitfury chips rather than stuff made with old BFL/Avalon chips.
POWER compsumtion isn't most important. Ghs/$ is very expensive? We mine with Ghs no watts. H-card v2.2 with 16 chips only hash 25 - 35ghs
http://www.bitfurystrikesback.com/product/bfsb-h-card-v2-2-compatible-with-v3-0-m-board-only/This is only 2.1 Ghs per chip
But when they sell chips say 3ghs @ .85w/Ghs .
If performance is that, because its mine 35ghs v2.2 pcb only. would have to undermine 48ghs and 40.8w.