The reason that I asked this question was that the new Magneplanar 1.7 was getting very good reviews and at $2,000 are affordable.Be aware that the Maggie's are not electrostatics. They have a lot of characteristics in common with electrostatics, due basically to the fact that both are planar. However, among many other differences the impedance and amplifier compatibility issues that I mentioned above are very different for Maggies. See the Technology page and the FAQ page at the Magnepan site.
Regards,
-- Al