Thanks for the update!
No, I haven't been back there yet. When I went, they didn't have the FLAT C in a twin driver speaker, only a single driver, and they said it wasn't broken in yet. It didn't sound nearly as good to me as the two driver FLAT B, so I decided to wait to go back until they have a broken in twin FLAT C to listen to...Interesting to hear that they have made further improvements-might you know what those are?
Thanks again!