The resale risk, BTCs USD value risk, if I had 10k to spend I'd still go with GPUs.
When you have 10k to spend, you can get FPGA miners for a lot less than $1.67/MH.
Unless you have essentially free power/cooling -- it really does not make sense to
invest that much into a new GPU rig.
-rph
Is there anything to this 'rollntime' 500% performance bump that BFL has purportedly achieved?