I've owned a pair of DeCapo BEs for 5 years, I am quite happy with them and they check all the boxes based on the things you require in a speaker, I would add dynamic to the mix as well. They present a realism that is only limited by the upstream components. Very natural sound resulting from the direct signal to the custom drivers originally designed by Daniel Dehay. There is a reason this design has been around for as long as it has. Of course it is ALWAYS wise to listen to as many speakers as possible before committing to anything.
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.