Wow, that is such a hotly contested price point! Your list so far is great.
I’d add:
New Magico A3, Used Sonus Faber Olympical III(actually available around $7K, and great for your symphony sound stage requirement),
Legacy Audio Focus SE, Used Rockport Technologies Atria(stretch budget to $12K), B&W 804D3, Used Revel Ultima Salon II(stretch budget to $11K)
I’d add:
New Magico A3, Used Sonus Faber Olympical III(actually available around $7K, and great for your symphony sound stage requirement),
Legacy Audio Focus SE, Used Rockport Technologies Atria(stretch budget to $12K), B&W 804D3, Used Revel Ultima Salon II(stretch budget to $11K)