@Hipper your comment about swinging speakers makes me wonder about the baby Magneplanars. Is it MMGW?
An idea! They look very practical, except of course requiring a sub. Magnepan make a bass panel.
I don't know anything about using them but have always been intrigued by panel speakers. People say though that it is a bit different from box speakers so I'd give them a good listen first.
There are other makes of flat panel speakers - TEAC, Martin Logan, Quad.......
This is an article about the different types of speakers. Electrostats are 'dipolar':
https://forum.blu-ray.com/showthread.php?t=66471
Go down to post 2 and there is a link to a list of speaker makers.