I am willing to bet that Audioperfectionist is a fan of time/phase correct designs (drivers aligned spatially to have an identical pathlength to a single point in space and utilizing 6 db/octave crossover slope). He also seems to require a small midrange and/or mid/bass driver (low mass/inertia and better dispersion). In other words, probably a fan of Vandersteens, Green Mountain, and maybe, Thiel.
Just a guess.
Just a guess.