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

@chuck 

Since you liked the Maggies, except for the bass, I would urge you to consider refurbished Apogees or similar newer speakers.  You could save a lot of $$ buying these:

https://skyfiaudio.com/products/apogee-acoustics-full-range-aka-the-apogee-speakers-spectacular?srsltid=AfmBOopcaoxmegg3zMDvr-Jw8edaMVP6jiRnSpvZ7eykmPMR5fBLmlMg

Refurbished Divas would be a comparative bargain, and probably good enough for most audiophiles.  Apogees like high-current amps.  I'm not familiar with yours, so keep that in mind.  The refurbished Apogees are more efficient than the originals.

The newer companies may be making a great Apogee-like speaker, but who knows how long those companies will be around.  I'd go with the used Apogees, but I haven't heard the newer brands.

Having used planar speakers for decades, I don't think I could be happy with conventional speakers' soundstaging.  But I guess it depends on one's sonic priorities.

If the OP is asking what personally would choose, I’d go for the Magico M3 as my tastes are Magico or YG.

Magico M3, Magico M project,  Stenheim Alumine 5se, Rockport Cygnus and the Songs Faber Amati Homage G5

They all sound great, I could live with any. But the Sonus Faber is more musical than Magico, so it’s best for @chuck  to demo speakers to find their subjectively personal favorite.

@chuck 

As I understand it, and others may have already commented about this, but subwoofers, in my opinion, are a necessity for any outstanding audiophile system.  Some speakers and systems need them more and some less, and many systems sound excellent without them, but proper integration of subwoofers is a boon to any system.

I had Maggie 1.7’s and had a difficult time finding speakers that gave me the imaging and soundstage that I was used to.  Then I heard the YG Acoustics Vantage speakers at a show and was floored with the imaging, soundstage and bass.  Their boxes are completely sealed yielding extremely tight, responsive bass.  I ended up buying the Hailey3’s used and haven’t looked back.  You could also look at the Carmel3s depending on your room size but I would spring for the Vantage.

@chuck 

Our systems are very similar.  My system consists of a VAC Master w/phono -> Boulder and N20 -> MSB Premier. 
 

I’m also a Maggie owner.  I started with the 10’s then 1.6’s and 3.6’s. I even bi--amped my 3.6’s with a Pass Labs XVR-1 crossover.  I thought I had a great sounding system.  Then I purchased a pair of YG Acoustics Carmel 2’s.  These small footprint speakers completely out did the 3.6’s in every way.  Accuracy, dynamics, detail and extension that I never heard with my Maggie’s.  I now have the Hailey 3’s as my mains and the Carmel 2’s as my center channel speakers.  I also have a pair of REL 31 subs.  The sound is amazing with a soundstage that is not only wide and deep, but it is much higher than the 4-foot Hailey 3’s with images extending to the ceiling.  The MSB is doing this.  My Maggie’s are now in my bedroom barricading my unhappy wife.

My suggestion is to move on from the Magnepan’s especially with your electronics.  Please try to audition the YG’s.  I also like Estelon’s.  However these speakers love high powered SS amps, but I haven’t heard them with good tube amps tbh.

happy listening!