gooffer,
buy a single BFL for 699... see if you get it... mine is getting about 826 M/hash.... then the upgrade to SC is only another $699 or there abouts and you pay half now and half later

That could be a great investment, but it's also risky.
I don't want to believe that BFL may be trying to set up a scam, and if they bring this huge GH/s concept up I guess they will lead the market in such technologies, leaving all others behind.
The difficulty would grow in a higher rate, and everyone mining with graphic cards would require some more powerful hardware.
That can be very bad for most miners, I guess, since their initial investment, buying graphic cards and good CPUs, would be affected for sure.