... and the OBVIOUS point there is that during those months you are not mining - whereas if you buy another device and mine you are effectively reducing the comparative cost price of the other device ... and we are not talking a small amount of dollars either.
True. However, for my expenses the ROI is at least 1 month shorter with BFL - including opportunity cost.
Give me an open source option that can compete head to head with BFL and I will be very happy about purchasing it.
Hope people start putting money toward OpenBitASIC. If they can do what they are saying it'd be one hell of an open solution.