I am a pneumatic footer user under Speakers and as I have quite a number of these footers as a same model. I have been in a position to loan them into other systems.
Some who have experienced my footers went for Townsend Sledges and eventually the Podiums. A selection of others went the Gaia route.
A lesser group who indirectly went for Townsends are now using Stack Audio Auva's.
I am an advocate of pneumatic footers, and from assessing a selection of speakers on their own suspension footers. I do not detect too much that is discernible, where the notion is that a much-improved performance is created across a selection of different designs. Within an audio system at a certain level, it is the small things that are the night/day changes.
Not all who have used suspension-type footers state that there was something valuable experienced and wanted to be maintained.
A Good thing to know is that a version of a suspension footer can be created very cheaply, and a lot of what can be achieved will be put in place.

