Used Speaker in the 15k range

   I'm looking to upgrade my speakers. Looking for a speaker in the 15k range. Shorlisted is Vandersteen Quatro, Devore 0/96, Used Wilson, and Joseph Audio Perspective. Used speakers are fine as well. Planning to upgrade my entire equipment.
what gear do you have  
I have Quatros woods love them you can see my system in virtual systems

Enjoy the Music 
Current AMP is PS Audio BHK 300 but I'm planning to change the complete setup. DAC and Pre are also PS Audio.
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So, what sound characteristics are you looking for and what’s most important to you?