Joseph Audio pulsar 2 graphene are some of the most musical speakers I’ve ever heard and probably my favorite, but never owned them. Slightly higher than your budget of $15k would be the QLN signatures. I own the Prestige 5s and just love the tonal balance of QLN…never fatiguing, midrange reproduction of instrument and vocal timber is near perfect, excellent on all musical genres. They make a standmount 2-way called the Prestige1, but haven’t heard it.