I have heard good things about the BFD but have not purchased one because the low frequency response is rated as extending to 20Hz "-3db". If this is actually true, then that is a deal killer for me since I need flat response to below 10Hz. I might try to lay my hands on one and actually measure the response and see if it is possible to modify the low end response to extend it downward.

Since the LFM-1 has a low frequency limit of 25Hz, the 20Hz limitation of the BFD might not be an issue. The EQs supposedly are very flexible.