Best room treatment

I’m under the impression that how much you use and where you place it is far more important than the particular brand of panel. Most places post the absorption specs for their panels so it’s not really a matter of better vs worse just “different”. (And of course the aesthetic angle).

With that being said, I believe Vicoustic’s analysis and room projects are highly regarded. $150 I think for them to consult on a HiFi room. Their panels are NOT cheap though (I did a consult from them and the cost for all recommended panels would have been close to $20k). GIK acoustics will do free consulting/advice, but I don’t think they’re as knowledgeable (at least in my experience). Though They were more willing to work with my budget of “around $1000” rather than Vicoustics more “we think you should spend $20k and make it perfect”

Thanks for the tips. I’ll check them them out. 

Advice, value, efficacy, selection:  GIK.

Their panels are relatively inexpensive, especially when compared to say ASC.

They have a number of products which are unusually effective at low frequencies.  These are among their priciest offerings, but again, cheaper than ASC and IMHO, sound better. They are tuned more broadly and the result, when used with care, is a more transparent response.

They also now have art panels, allowing you to get get panels to match any decor.

ASC is also excellent IMO. They will make a plan for you at low cost, like GIK. I’ve bought a lot from both and been happy with both. ASC was much earlier with panels that didn't absorb everything, and the ASC approach avoided overdeadening the room in the HF. I think GIK is now on that bandwagon with their Alpha traps, for example.

No bass trapping? In most rooms, that’s a must.

Synergistic HFT are far more effective than old-school acoustic panels. I know. I have extensive experience with both. https://systems.audiogon.com/systems/8367