I have also listened to the Reflectors on several occasions at a local dealer. The cabinet is larger and heroic efforts are made in making the cabinet more inert to vibrations and resonance. The speakers weigh 75 lbs each! There is certainly a difference in presentation from the DeCapos, a greater sense of the cabinet disappearing and a somewhat more transparent presentation, deeper bass, a different animal from the DeCapo. I personally couldn't justify the price difference although the dealer did offer me an excellent deal. The DeCapos just suit me all the way around in my setup and room.
FYI I am currently using custom Neotech gold/silver ics, Omega Micro Planer 2 speaker cables, all tube electronics, including a OPPO Modwright CD player and Oracle Delphi table and 2 Rel subs.