When Al at RAW acoustics was around, they started distributing the SDX drivers which look very cool and competitive at their prices. The drivers are made in Taiwan and the subwoofers are made in China with XBL technology as well. Looks very interesting.
I would ask the designer to provide you with more measurements of the MTM satellite design, especially off axis to 60 degrees at least. That way, you will be able to judge somewhat yourself.
Best,
Anand.