Recommendation for detailed/analytical bookshelf speaker?

This is fascinating.  Your POV of buying a low end speaker and seeing if you like it may or may not work.  I have found several manufacturers, when they switch to higher end tweeters, the sound profile changes completely.  Additionally, I think you and I may have similar taste.  

I am a fan of stand-mounts and listened to everything I could under $25K.  Other than the Kaiser Chiara ($22K) I was vaguely disappointed with every speaker I heard which is what led me to start my company. 

At the lower end (under $6K) I found sound stage lacking if the speaker was ultra detailed and I listened to several speakers mentioned above.  If detail and neutrality weren't a strength, the soundstage was usually much better.  Above $6K soundstage improved dramatically but I either hated the tweeter (I find Beryllium's metalic and bright sounding) or the speaker didn't work in my room.  I even bought a very expensive pair of stand mounts with a wonderful ribbon tweeter and the soundstage I heard in the showroom did not come together in my room.  

I developed a line of speakers that met my needs I offer a very realistic sounding speaker called the Blackthorn 1. I just had someone in demoing them and they exact quote was "if feels like I am in the studio."  My concern is that your NAD gear might be a bit warm for pairing for pairing with the Blackthorn though the Master Series is a bit more neutral than their other gear.  

If you are in NYC Metro, Boston or Philly I could arrange for a demo in your home.  If you are elsewhere, I am thinking about putting together an in-home demo program where you would "rent" the speaker from me via Fat LLama.  If you aren't familiar, it is a rental service that protects me in case of damage, etc...  The rental fee would be the cost of round trip shipping and I would take that off the final price if you opt to order them.  

If you are interested, check my speakers out at:

https://verdantaudio.com/collections/verdant-audio-speakers/products/blackthorn-1-standmount-speaker?variant=26459232567396

After AXPONA things sold out quickly and I am waiting on parts.  I think that I will be back in stock this week.  I do offer a second speaker called the Nightshade 1 but it offers a bit of a colored sound.  The Blackthorn is Precise and Refined, the Nightshade is Soulful.  

"Try Legacy Audio Studio Hd. AMT tweeters, and nice size woofers for a bookshelf."

I overlooked the Legacy Audio stand mounts... but... yes, they are superb also... especially the Calibre.

And... yes... the AMT / ribbon tweeters make all the difference. But... many that have those tweeters... don’t get the mids, bass and soundstage right (e.g. Martin Logan, Golden Ear, etc., etc.) - the others I mentioned do. And, in the case of the ATC’s and Proac... they’re used by many sound engineers, because of their accuracy and resolution.

Though... I should reiterate... the Wavelength Audio Grand Tetons or Anteros are the real "giant killers." 

LS3/5A....Pick your brand.  :-)

The best bookshelf with the best detail are the ATC SCM-11 V2 ($2200/pair) or SCM-19 V2 ($4000/pair). They demand clean audio or you'll hear very flaw on the record, in the TT and Tonearm , etc. 85 dB sensitivity. Excellent detail, image and sound stage. Timbre is clear and exacting. You'll need good electronics, but if you can drive them they are awesome!

Rollin

Hey Folks

So, Insoc - the description of YOUR flavors mirror mine to quite a degree in my small sound studio.  I happen to be running a modded NAD M2 into a pair of SEALED Salk Veracitys, also modded.  In speaking to Jim Salk, these are the only sealed pair he's ever built for a Customer.  The original buyer, a good friend who spins top vinyl, found them a bit too "hi-fi sounding," dry and sterile for his liking.  Careful for what you wish!  They had gobs of detail, tossed a large stage, were plenty dynamic, and magically did the "full disappearing" thing.  With them, my preferred placement is out away from the walls, still wide yet not quite nearfield.  As discussed in my other posts, the monitors sit atop IsoAcoustics ISO-L8R200 stands above a pair of Paradigm UltraCube 10v.2 subwoofers, sufficiently quick, deep and musical down to near 30Hz. 

Now, the word "modded."  I can see hackles going up!  Having 20 years of experience with Marigo Audio Lab tuning dots skillfully applied to my best gear, I had full confidence that lowering the resonances in the drivers, the spiders, the boxes (inside and out)...the SOUL of these speakers would be discovered, turning micros into musical nuance and excitement!  I also removed the cone driver clips and soldered the wiring. The connection to the RAAL ribbon tweeters were also upgraded.  My passion lies in taking a wonderful design, and improving upon it. 
  
Verily all manufactured products are made to a price point and can be improved upon.  In recent years, I've discovered that the addition of high quality deep bass and extended high frequencies...well beyond measured hearing...can indeed improve the perceived accuracy of all frequencies, the timbre and sense of reality. 

Finally, insoc, with your budget, I would look at British monitors, the JansZens, Joseph Audio Pulsars, Cube Nenuphar 10" and the bigger Tektons.  Happy tunes! 

More peace, Pinthrift