I am somewhat puzzled about the lack of phase linearity in most of Genelec´s monitors. Is there any one with linear phase besides the 8350? I think linear phase is more important than coaxial arrangement... The 8351 seems a step down from the 8350... It looks Neumann is ahead in this aspect with their Kh-750 and MA-1 "phase linearizers", and with the already linear Kh-80.
On the other hand, the phase issue can always be solved with Dirac. If you count with that, you can concentrate in other aspects of performance and the number of reference-level speakers is multiplied... (that is my current situation, I don´t know which route to take).
I put together a controlled phase distortion ABX test. You can find details here:
https://www.audiosciencereview.com/forum/index.php?threads/phase-distortion-abx-testing.18709/
Please let me know what you think.