@oceanandmountains I have a number of customers using my 150W amps with speakers that are 100dB plus, I think one guy even has speakers that are ~110 dB.
I have only heard good things from these customers.
@rajugsw uses my 500W amps with Cornwall IV’s... it’s a room-shaking sound when loud and sounds very good at low volumes too, I can personally comment on this one as I have heard his system myself. Here is a picture of it: