Standmount speakers. I have $5000.

I'm shopping standmount speakers. I have $5000.  New or pre-owned is fine.


Micromega M100 integrated pre/amp/dac
Syzygy SLF870 sub x2 (12" drivers, 1200w ea, 20-200Hz, room correction)
Dynaudio Stand 4

room = ~5000 cu. ft, 20'x 18' with 13'-17' vaulted ceiling

The new standmounts will replace Nola Boxers v1 ($1500 new in 2013)

I'm lazy about travel to audition anything but might for local options (esp. to vet pre-owned). I'd probly deal with in-home trial.

As semi-arbitrary starting point I'm looking at Salk SS 7M's ($4995 new). Any others I simply must consider?

The vast majority of musical content lies in the midrange.Yes it might be optimal to have low bass but most music does not have much low bass and the best way of achieving that if you want it is with a pair of active subwoofers [probably with DSP].
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b_limo: I noticed that too. I’ve had mixed experience with tmr - the single positive outcome was a purchase where I think I did quite well. I subsequently found that tmr was actually the 1st (and only) owner of the component. I think I got lucky. The rest of my encounters have left a bad taste - including a ridiculous lo-ball offer from them for a REL R328 sub, followed by usurious pricing on other pre-owned R328’s.
I can't help but comment: 
Has anybody heard of PMC ! ???
The speakers most widely used speakers in the recording industry and with the unique and best driver loading AKA "Advanced Transmission Line".
You will NOT ever hear a better or more natural stand mount speaker today.

PMC Twenty5/22

Or better yet their Active Professional line
I do large orchestral from time to time
In that case, check out DeVore speakers as well, they are reasonably priced and offer large enough sound to fill up your room (E&M in Paris 12 had them, prob still does). Another unusual but no less interesting manufacturer is Tekton, offering weird design speakers (with limited Significant-Other appeal!) but huge sound!
Both of the above are easy to drive, the Tekton actually being hi sensitivity; I don’t know your micromega, but on paper, it should be more than adequate!