Another summary: 52 users reported so far. 36 different speakers.
Most popular brand Naim (15 speakers). Most popular speaker: NBL (5), though if you count the different versions of B&W 802 as the same basic speaker, then that also has 5 users.
B&W 802 D
B&W 802 D2 (3)
B&W 802 D3
B&W 803 D3
B&W 804 D2
Focal 1028 Be
Focal Supra 2
Gauder Acoustik Berlina 7 Diamond Mk 2
Harbeth 40.2
Kudos Titan 606
Kudos Titan 808 (3)
Kudos Titan 88 (3)
Linn Isobaric
Magico S3 MkII
Mission 70
Naim DBL (2)
Naim DBL (Active)
Naim NBL (5)
Naim Ovator 600 (2)
Naim Ovator 800
Naim SBL
Naim SL2 (3)
Neat MF9
Neat Ultimatum MF7
Neat XL6
PMC Fact 12 (3)
PMC IB2 se
PMC Twentyfive.26
Proac K6
Proac K6 signature
Shahinian Diapason
Shahinian Obelisk 2
Sonus Faber Amati Futura
Spendor Classic 200
Totem Mani 2
Verity Audio Sarrastros II
Interesting no ATCs, though perhaps at the top end more people go for the actives. Also interesting no PMC MB2 - but perhaps the natural pairing there is Bryston. And others have mentioned the absence of Dynaudio and Wilson Benesch. Other higher end brands are also conspicuous by their absence.