Thanks ! I wouldn't say "money is of no concern", cause then I would have bought BL50's :-) .
Maybe good to know that I only consider(ed) it because of the latest Van der Graaf Generator surround 5.1 remixes; i.e. music surround not movies in surround.
I am totally impressed by some of the music surround DVD/BR I had but never listened to before in surround until that VdGG discovery. So have been listening a lot the last few weeks to not only mr Hammill in 'surround", but also good old Quadrophenia (almost as intended in "Quad"), Talking Heads' Remain in Light, KC's Discipline and Beat, PF's Wish You Were Here and almost a dozen of wonderful Nick Cave 5.1 remixes I had forgotten about, as well as those available on Apple Music (Abbey Road, Night at the Opera etc).
So what I'm after is I guess more than "rear bass effects" (that would apply to Movies with 5.1, not remixes of music, where quite often a lot is going on, certainly when the remix is more like a "Quad" version)
I was also a bit triggered by what Steve mentioned in his video, i.e. that for the BL28 one can choose a setting which - in my interpretation- makes the exact positioning less critical: I found that only in a sweet spot the amazing surround sound of the music from the back comes across with the BL18's....
I guess I was / am hoping with the BL28 the exact positioning of *the listener* becomes less critical ?
you asked for my further thoughts ;-) Sorry for expanding - that happens when 2 of my long terms passions are involved (VdGG since 1977 and B&O since 1985).
Rene