Kenny:
I, too, have done a number of REW measurements on the DIs and agree completely with your comments. Unfortunately I posted some of the results on another site and was overwhelmed with negative comments. Many pundits do not understand the nature of room acoustics as they affect speaker response.
What shocked me was that the response at 20hz was dead on at 0db. This is better than the Hsu Research subwoofers I have tested. For my listening habits there is no need for a sub.