I'm assuming these include measurements up to 20KHz or higher? If so could I bother you for those? I use my ECM8000 for equalizing my mains and surrounds as well (Sony DA5ES with built in 3-band parametric EQ), and I believe I've seen FR numbers which indicated the ECM8000 was not flat near the...
Ed, First off great comparison, it's nice when someone actually attempts to employ the lessons of the scientific method. That said, I have one small critique to make, which I don't think effects the validity of the comparison, but is something you might want to keep in mind in the future...