Its your opinion, but 60 GH/s BFL is at 300mil diff pointless to run thats all. In that moment all BFL units will stop mining(jalapenos and 25GH/s little sooner). And this is same story for Avalen etc.
And i dont think that KNC will be next BFL. BFL is simple big disaster in ASIC business(customer service,more than one year delay, no ROI).
Not for those of us that have free electricity. In that case, we mine until the hardware dies, or we decide to sell it.