What can beat Wilson XVX for less money?

Yes.

It all comes down to preference.  Here is what I would purchase if I was looking for a pair of speakers today.

The Dynamikks re $20K and the next model up is $30K.  They are open, dynamic, have details, slam, and are musical.  Easy to drive.  Just heard them again with the Line Magnetic 20wpc intergrated amp around $4200 and they would be hard to beat even with that set-up.  I have heard the new Wilsons set-up by Wilson recently with top of the line components.  Nice but they are not the same sound as the Dyna's.  The Dyna's deliver bass, clarity, dynamics that most speakers cannot match at any level.  Read about their design and drivers.

https://hifidirect.com/Dynamikks

Happy Listening.

How about a pair of Duntech Sovereign's or Dunlevy SV-VI? Often described as the most accurate loudspeaker in the world? The largest pair of headphones? I know ancient tech, but... 

OP have you heard Austin Acoustic. These are probably the best system and speakers I will ever hear on my entire audio life.Wilsons,Magico and all good speakers. I've heard them at axpona but they were never properly set up, at times they play them to loud? The room is not even capable to absorb the energy. 

If the room would accommodate them, I haven’t heard a more coherent and well balanced reproducer than MBL Radialstrahlers. German Physiks maybe or for old schoolers like me Ohm’s best. In principle I like the coherent cylinrical wave better than dentist chair sweet spotters like Wilsons.