What is a good all around high quality speaker to purchase?

If you are near Los Angeles, Cal, I'd recommend to audition the Wavetouch Antero V2 speaker. Alex/wavetouch

https://youtu.be/ADJab9HrXpU?si=vj_1g71K3fOb1GCy

https://youtu.be/IVomcnMsAaE?si=hN2EY4mkfjxUjidC

If you have a $20k budget for just speakers, I would be looking used. There is a huge selection well under that price point that would be amazing. I’d be considering Sonus Faber floor standers. They just sound and look beautiful (if looks are important). Else there are KEF blades, Lower end Mágicos. If you want a panel, I would suggest Martin Logan electrostatic speakers.  I own and love a pair of Montis. But you probably could get even newer models for under 20k easy. 
 

you have many options. Best if there was a dealer near you that would loan you some to demo in your own space. 

https://www.sonusfaber.com/en/collections/olympica-nova

Sonus Faber Olympica Nova V, $18k a pair, thank me later

@onehorsepony 3.7 is one of Thiel's best if not the best speaker created.  Thiel owners would not be happy with those kind of words. B&W Nautilus or Diamond are musical with tight bass.  Not sure what speaker you need along with yiour equipment.