I'm not usually prone to quoting/citing myself, but...

https://bitcointalk.org/index.php?topic=130982.msg2846982#msg2846982

I'm still formulating a plan for these reserves. There are a multitude of options coming and the field changes daily. At this particular moment I'd like to say we're going to order 10+ 400Gh/s Bitfury kits, but I don't know because they're not available yet & haven't been reviewed yet. I have the same information everyone else has.

Cheers.