My position stands... throwing electronics at your concern isn’t going to address the desire for better SQ.
The retail therapy may help... but that is really just the placebo effect taking hold of your perception.
I already mentioned the speakers, but the other half of that equation is your room. The individual drivers (transducers, which convert electrical energy to sound energy) in your speakers, how the box is designed, how the Crossover is designed, and how that system interacts with the room they are in: that is SQ.
You mentioned acoustical treatments. Did you take room measurements, before and after installing your panels (I presume)? If not... then you are simply throwing a watermelon at a lock and hoping the door opens.
Acoustics is complicated, and unless you understand what you are doing, you could just as easily aggravate the situation further.
You are in the right place to ask questions, though!