Mojo -- I did not. When I heard nickbuol describe his conversations with a Dolby Labs representative, I understood conceptually the challenges presented by a multi-polar speaker, esp when tracking audio objects in a 3 dimensional space. So, I did not second guess his reco, just traded in the QS8s for the on wall M3s.
Very happy I made that decision. The ambiance is terrific. The audio is super clear. The overhead soundstage is very clean from the overhead ceiling speakers as well. The HT installer was very appreciative of the quality of the on wall brackets (the speaker just hangs off the bracket both structurally and from a connectivity standpoint, no need to strip out the ends of the copper wire and thread into the holes at the back of the speaker), as well as the overall robustness of the ceiling M3s.
