The Subjective and Objective Evaluation of Room Correction Products is the latest post, the products being compared are the Anthem Statement D1, the Audyssey Room Equalizer and the Lyngdorf DPA1. As well as two Harman prototype designs and (naturally) no EQ.
Interestingly, two of the products scored poorly (one was worse than having no EQ)... but Mr. Olive doesn't tell us which ones.