when i was auditioning the audience 42 and 52 (primary use is for music, not home theater), i noticed that it does not sound good on a yamaha. i asked the sales people to change the amp to another and they suggested a pre-owned Classe (30K) with 70wpc. the 52 sounded better than the 42 on this setup, but even with 70w of power bitin pa din. my observation was that other low sensitivity speakers are not as hard to drive, e.g. sonus faber, LS3/5A.
in my specific requirement, i had to think twice about the dyns, because i will be limited and would require me to upgrade my existing solid state amp also at 70wpc.
what i learned is that i made a right decision in going for an 89dB speaker. it is easier to drive, and is tube friendly (impedance is quite stable at different FR) as it works well on my 40wpc ultra-linear push pull amplifier as well as my DIY 2A3 single-ended amplifier at 3wpc.
had i gone to the audience 52, i would probably had upgraded the solid state amp to a more powerful one, i won't be able to use tube gear and miss out on the musicality of tubes, or i'll be selling the 52.
i am not trying to influence your decisions or biases, i am just merely citing my observations coming from the other side of the fence. undeniably, higher sensitivity speakers (not all) have their own merits.
IME, YMMV