Ya I've look at them a little closer, and pretty much I'd have to go with the  USB-FPGA Module 1.15x or  USB-FPGA Module 1.15y at my price per kWh if I want, with a payoff time of 2-5 years...so I'll have to continue the research and think hard on mining, if it had been earlier in the game I'd probably be all over one of those FPGA's.