I've played the Sauter omega (7 footer). My imperssions on that particular piano was that it has a very concert like sound. Something that could fill a hall (even though this was only 7 foot). Grandiose and excellent projection.
I've never played one, but long to. I envy you. It's probably my dream piano. I've only played a Delta and a couple of uprights and that was enough to sell me on Sauter.
Why 'get rid of a Sauter' ?