Bob, my lady BFF and I were watching Resident Evil from Amazon Prime tonight. In the scene where the Red Queen was explaining to Alice and friends the goings-on in the hive, her voice was appearing centrally above me and to my left and right either at the plane of my head or slightly forward with just the side QS10s on. When I turned both rear M3v4 on, her voice also filled in a wide area behind my head. The effect was pretty cool but I wouldn't really miss it if it wasn't there. By the way, it sounded as if I had Atmos speakers above me. I never got an effect like that with the QS8. Also with the QS8, her voice would not have sounded as room-filling but rather puny and off to the sides.
