I've been living with the K812 and HD800S for some time.
Unlike many I don't think the HD800S is necessarily better. I would probably rank it just below the HD800 personally. But they're very close, much in the way the HD600 and HD650 are.
The K812 probably would not be in the top 15 for me.
Hi David . Have you auditioned the Utopia? I wonder how does it compare with Stax SR-009?
Would you place Utopia in top 10?