$3000 stand mounted speakers?

Tekton Impact Monitors.  Incredible speaker and value.  $2k delivered.  Check out the review.

https://hometheaterreview.com/tekton-design-impact-monitor-bookshelf-speaker-reviewed/

I can’t get past the look of Tektons. Looks way to busy to me drawing your attention to the speakers. I like a more subdued look. Not only does a $3k speaker have to sound good, it has to appeal to my visual senses too.

1.   http://www.wavetouchaudio.com/antero.html

2.   Proac Response D2

3.   Fritz

4.   Maggies

Wavetouch because of the value and most natural sound, as well as the universal positive reviews.

I went through a similar Journey a year ago. However my room is much smaller  @ 13 x 15 . My list had a number of speakers already listed. Including Dynaudio Special Forty ( loved the Contour 20 much better  Maybe used $3500). ATC SCM 11 or 19 , Proac Response D2 or D20R ( not sure if bookshelf) , Legacy Studio, Fritz Carrera BE. I also included Acoustic Ariel 5T, PMC IB1S Studio Monitors or the Twenty 5, Focal Electra 1008BE , Selah Tempesta. My goal was to replace an older (20 yrs)  Sonus Faber Concertino . I was also looking for a great price on the SF Olympica 1 ( used) . Only heard a few of the speakers live when a used pair of Monitor Audio Platinum 2 became available locally . It has incredible highs and an outstanding firm base response. The base was so good I no longer needs the SUB for the music I play  . I am shocked at how big they  sound and fill the room . They soundstage is very wide. Literally blew the old SF's away - not surprisingly given the age and cost difference . I use a 36 watt Tube amp and maybe max at 11oclock on the pre without them being much too loud yet still sounding very clear .  I thought I would need more power . 
With a large room I think you will need to be much more selective . Even with a SUB it will be hard to fill the room . I know you are looking for a Bookshelf Speaker but there are some lovely and great sounding floor standers with a small footprint . Maybe a used Totem Forest Signature for a room that large.       

Mjcmt-  sorry can’t be of any help with the different tablette versions.  Think you might be confusing the anniversary and signature versions, which are different.  I only listened to the tablette anniversary at the time I purchased them. They have since been discontinued.  I did not compare them to other proacs.  The anniversaries I had were rear ported, so a bit sensitive to room placement to get the best bass. I believe the 10 is not, so you can place it nearer to the rear wall if that is an issue. Not sure the sonic difference between the 10 and the 10 signature.   Many years ago, I had Proac response 1, which were better than the original tablettes (just seemed more musical in the mid). So you might consider looking at the current response line as well as the tablette 10.