With shun mook the tone, flow, decay, space and size of the whole stage, all improves. With stillpoints it becomes a bit dry. Initially feels fast and tight but it is adding tops and drying out mids. I only tried up to the ultra 5s, not the ultra 6.
Effect might change a bit depending on platform underneath but never like stillpoints
Positioned under any piece of equipment, four Seismic Isolation Pods will dramatically improve the sound by breaking the acoustic connection between the audio system and structural vibrations in the room.