$35000 to $40,000. speakers what would you buy and why?

I I would suggest you at least consider Fyne Audio, perhaps their F-xx line or even their F-704SP, which comes in at 26k per pair.  I have the plain F-702s—8” woofers supplemented by two Rhythmik subs, but the 704 has a 12” woofer—driven by a Rogue Audio RP-9 tube preamp and Odyssey Audio Kismet monoblocs—just converted to stereo by Klaus to enable me to vertically biamp the 702s.  

The Fynes provide incredible imaging and superb tonal qualities.  I am getting outstanding 3D imaging, and the tonal qualities of both instruments and voices is … well, almost as if the performers are in the room with us.  I can only imagine how much better the upgraded 704SPs would be as our listening are is rather small, so the 702s fit best in our room.with my room size and age, these are the end stage speakers for me.

Happy hunting and listening, wherever your ears take you!

I recently heard the Rockport Technologies Atria II at $38K, and thought they sounded amazing. Super accurate, without a tinge of "unmusicality".

I like the speed of electrostatic speakers. With that budget, I'd consider Sound Labs. I believe there flagship is the Ultimate Series

Vivid Giya CU, as big as you can afford and fit in your room....4's, 3's. 2's...

Hands down Fischer & Fischer 570's from 11-Stereo.

I have a pair of 470's and absolutely love them. The 570's are larger and able to go lower into the sub-sonic range so they'll be the last pair of speakers you ever buy.