New ultra high-tech speakers

Hi guys, what do you think of the new breed of ultra high-tech speakers, like Lumen White White Light, Sonus Faber Stradivarius, Dali Megaline? These speakers should be the state-of-the-art, although they have very different designs (the Lumen White and Sonus Faber are dynamic designs, the Dali Megaline is a ribbon/dynamic hybrid). Btw, they all cost around $ 20,000. But still much cheaper than Wilson Audio Grand Slam, the JM Lab Grande Utopia and the Kharma Exquisite Reference 1b.