The TPC wires will bring images forward and cause them to move. It can be an in your face experience at times Not in a bad way. It is actually pretty astounding. The SPTPC is a more behind the speakers into the front wall experience. I tried all three coppers in one trial. The SpTPc was more of the stage experience.
The Madonna Immaculate album is 3D sound. I would not try to set up speakers with th that album for sure. Better picking a live single miked recording.
Glad you’re having fun. Iconoclast are a great design.