seeking advise please on my short list for new speakers? (15k budget)

If I had $15k to spend, I'd go for the Volti Rival's. 

Yes I am biased.

Several good suggestions already also. 

Fyne Audio?

I would highly recommend Pure Audio Project Quintet15 with your favorite type of center driver. Best speakers I've ever owned, and one of the best I've ever heard are my Trio15 Horn1. They are high sensitive and easy to drive so can be powered by lower wattage amps. Dynamic, detailed, punchy, and musical. No sub required.

Have you considered the Buchardt A500 - active wireless stand mount - or the larger A700 floor standing towers? With the available WISA hubs(24bit 96kHz transmission), you are able to configure up to a 7.1 surround system if home theater is part of your dedicated sound space. Power cords for each speaker would be the only visible wiring - unless you opt for balanced XLR(24/192kHz) connections. buchardtaudio.com 

There is a pair of Wilson Sashas used for $16,900. Think it is on tubeusa.con but just Google Wilson Sasha and you will see it.