What I can reveal IMNSHO, also using the Django & Bastanis Prometheus Open Baffles, is that the Ladyday Cherry Specials presents an even superior presentation of the soundstage. That is if you crave ultimate detail and openness in a 300B amp. If the MU places you on the edge of your seat the CS drives you clear out of your seat and onto your feet. The entire room is literally flooded with imaging well outside the reach of both the MU or 91 circuit. Top Music's, Starker Does Kodally, had both my wife and cat piling into the room to see who was playing the live cello. They both sat mesmerized by the sound.
I call this effect "liquid audio" a very rarified occurrence in hi-end audio. (Try as I might I could never get the MU or 91 to get wet). Along with the above mentioned ingredients you will need top notch source, interconnects, and power cords to drink from this well. The smallest imbalance in your system and the illusion will diminish back to regular killer sounding music. Hardly a bad thing, but defiantly not liquid. Even without top notch gear, the LD CS's are simply found further down the path from the LD MU's. Again, a good thing in my book! While this may not be your cup of 300B tea, thought I'd chime in with a uniquely different taste available within the growing Ladyday family of sound.
Bill Allen
BaulsAudio.com