I think that Spoondoolies is missing from that list. Granted they are pretty new - I'm fairly certain their numbers come close to AM.
Here's a review:
https://bitcointalk.org/index.php?topic=525469Hash rates vary between 1.4 and 1.6TH depending on temperature, and power consumption between 1.1 and 1.3KW from the wall.
That's about 0.8 W/GH.
Does anybody know which vendors are able to deliver < 1 W/GH with current models?