Speakers under $50k that rival $200k+ speakers?

Great to hear that sort of report.I really think the NS5000s set a new standard for midrange reproduction.The rest is very good too.The drivers being all made from the same Zylon material must also help with tonal consistency and cohesion.
If you are concerned about the bass overdriving your room Yamaha make  acoustic panels which you position just  behind the speakers.

Snell speakers can be had for a song. I have a pair of Type B's. I picked them up off eBay for under $700.00 Bass goes down to 20 htz and they throw a big soundstage. One warning; the midwoofers need to be replaced or reglued. I found four new drivers out of Australia. They cost around $380.00 to get them to my door. To my ears these Type B's sound as good as the big B&W's of which I've owned several pairs. A guy does have a pair on Audiogon for sale. You can see the mids were reglued. Great speakers!

I loved the Avant guard duo mezzo at axpona such dynamics but you may need more space. I almost bought a pair but went for gryphon.

Yes you can call me a partial - but I have been a dealer for 30 years and have sold some of the worlds most expensive systems and Have heard just about everything else out there. Until you experience what the GT audio works loudspeaker system can achieve with its planar  magnetic crossover less system with its accompanying Open baffle servo subs you haven’t experienced true dynamic transparent sound. GT audio works loud speaker systems have consistently won best sound of shows -Most of our customers from around the country are our best  advertising. Please see below video 
And yes they are way below 50k
https://youtu.be/2ZgRiAdbDNw

If I were trying to beat 200k speakers with 50k I would spend 30k on speakers and the rest building a proper well treated listening room. To paraphrase Jesus: Why are you worried about the splinter in your speakers eyes and ignoring the beam in your rooms.