At least in a single ended system, the Art Audio Conductor is pretty great. I replaced a PS Audio BHK with it and it was a noteworthy step up. Not sure if it is the best under $15K but is fabulous and a good value at $8500.
I am sure in a balanced system the BHK would be better, single ended though...
I am sure in a balanced system the BHK would be better, single ended though...