16k still too expensive. I would purchase immediately for 10k though.
you may want to revisit
http://mining.thegenesisblock.com/ and set shipping date to jan/2014
10k is still way overpriced
they are supposed to announce their remaining product line "by the end of the month" unless they miss their second self imposed deadline.
i think they must decide to ship 3x hashpower for the same price or slash prices by a third to live up to their own hype and leave any meat on the bone for their customers... or implement a SERIOUS protection plan. guarantee a return of invested btc, minimum, for anyone to take them seriously.
Under this scenario,
http://mining.thegenesisblock.com/a/90782dc52a , the difficulty would be 557 billion by the end of 2014. That would be almost 4,000 petahash. Even at $1 a gigahash, that is $4 billion worth of hardware, not to get into the electricity consumption.
I think this scenario is more likely:
http://mining.thegenesisblock.com/a/e9b41de60dThat is 2 billion for January (yes it says august), which is unrealistically high, with a 400 million increase, every month. that is another 2.8ish petahash a month.
Of course all numbers a can be thrown out the window if there is another bubble before then.