@noske I want to assure that at AGD we are confident to provide the most advance technology with all our designs.
Personally, and to dissipate your doubts, I have been working on Class D since 2001 and on GaN technology since 2005.
With all due respect, Silicon Mosfet cannot compete in performance nor on future FOM (Figure of Merit) improvement with GaN based semiconductors, it is not a matter of opinion, it is physics.