Also seek out an audition of the Spendor A4. $3500/pair. They have greater bass extension, less cabinet noise and superior resolution. If connected to high-quality ancillaries, they can sound as good as some $10K speakers. I could imagine them being the end-game for many listeners.
Another speaker I'd take over the C7s at $3K/pair are the Rega RX-5s. What Hi-Fi gave them a luke-warm review, and despite usually agreeing with their assessments, I didn't hear any of the issues they noted.