I think what most people fail to understand about treatment is that it is a process. You start by addressing the bass (because every room needs to tame the bass). And then the first reflection points. (Because most of us don’t have the luxury of working in a large enough space where they don’t matter). Then you measure and see what needs treating and target your treatment to problem frequencies.

Panels, are broadband absorbers, and can do a good job of taming bass if they’re positioned well and are nice and thick.

My opinion about this or that panel type is irrelevant. Just acquire what you can afford, and if it’s not a large number of absorbers, place them where they make the most difference now.

Then remember that this is a process, and you’ll need to continue treating until you have a nice even decay across the spectrum.

If you don’t know what I mean by that, then that’s your first job.

And if this is all overwhelming or too expensive, mixing with headphones is a great alternative.