I have extensively tested both in my 15x17 room with Aerious i (Depth vs REL) and in my mind no comparison! The Depth is far superior and does superbly on reproducing the "missing " notes but what is more important is that it never draws attention to itself. OTOH, when the REL was in loop it would make its presence felt in a negative way. Maybe the Depth crossover options are better suited for ML products. Cheers.
