IME, when properly executed, the RAAL ribbon is the tweeter to beat for classical music. It is very, very good at anything, but for stringed instruments, it has no peer!
With either of the above speakers, you get that in an extremely high value package (Dennis is retired and not trying to make a living off of his speaker business - just something he is very good at and enjoys sharing his passion - anything he offers is a great value).
Honestly, now that Dennis fitted the BMR to a PE cabinet to get the price down from $1650 to $1350, I would not even consider the $1150 New Philharmonitor! In an 11 X 12 X 8 foot room, I would consider f2 of 32Hz (before room gain) acceptable as full range for normal music (not the deepest pipe organ or movie LFE content), so that extra bass avoids the need for a subwoofer.
However, the truly amazing aspect of the BMR is it's excellent dispersion!
The red line is on axis, the blue is 30 degrees off axis, and the green is a whopping 80 degrees off-axis (most tests don't test beyond 60 degrees)!
So 30 degrees tracks within 1-2dB of on-axis and 80 degrees within 5dB! I know of no other speaker that is this consistent off axis
This is particularly relevant because instruments like harpsichord, cello, and violin radiate sound in all directions and a viola reproduced in your room over the BMR's will sound very much like an actual viola in your room.
As you have no doubt gathered, I am a fan of Dennis Murphy and Philharmonic Audio. I often recommend them, but don't normally give them this much of a "hard sell". However, IMHO, you are the perfect application for the BMR.
Where do you live? If in the Atlanta area, you can come by and listen to my BMR's and compare them against Martin Logan electrostats and Focal Twin6 Be studio monitors. IMHO, listening to a speaker without something to compare it too is not very helpful. Most of the speakers you are considering will simply sound great. It is not until you A-B them with other great speakers that you realize their specific strengths and weaknesses!
BTW, It sounds like you probably have a great room, acoustically. Unless your bookcases have glass doors, they should make excellent diffraction/diffusion panels!