You all know this but I’ll state it anyway ...

QS10s are directional in a very limited way, They are diffuse by design giving only a general sense of direction. They are great for ambient sounds that surround you like rain or cheering in a stadium. A single speaker creates a large area of sound in its general area ... I.e. somewhere left, right or behind. If you have angled ceilings or walls you might have trouble discerning even that (depending on the room).

A direct firing speaker creates a point of sound. Several direct fire speakers are needed to create the same ambient effect as the QSs. If you have enough of them then you can place a sound in 3d space. Something the QS series can’t do.

So, The QS series is great for the 5.1 or 7.1 formats where the surround effect is intend to be diffuse. The newer 3d formats require direct.