yeah I've never been happy with my 150 in my main theater, mine is rather old though, TI I think. Killer is I love how I can hang it, no need for stand. But it did fall at one point, thankfully my theater screen broke it's fall, and thick carpet saved it too. Darn mounting point failed. So lesson learned, put speaker under screen - which made it sound worse again.
I have no concerns with my onwall 150 working well with my onwalls 22's and m2's on my other setup. But the room is much smaller.
The reality is I need to get rid of my older setup because of atmos. QS8's replaced with M2 or M3 onwalls, and my center, maybe even my m80's. Honestly the M80's have been great speakers though.
