Acoustic panels: ATS vs GIK

That's interesting!

Go for what you can get quicker/cheaper, assuming the absorption coefficients are similar.

I'm about to need an entire room fulll, so I"ll keep this in mind. 

I have to say though, the GIK soffit traps are amazing! If you have the room to stand them up, check them out.

@erik_squires its almost exactly $100 less than GIK, and that is with the upgrade to Gilford of Maine cloth. If I add the Guilford upgrade onto the GIK order that would add an additional ~$100 to that, making the difference now $200. 

And they're in IL.

I have used ATS panels with the Guilford upgrade for many years.  Well constructed and beautiful accent to the room.  I have two corner bass traps, 4 - 2’ x 2’ x 2”, 4 - 2’ x 4’ x 2”, 2 - 2’ x 2’ x 4” panels in my 14’ x 16’ x 8’ dedicated room. I started with 2 of the small panels I acquired used and the factory supplied me new cloth to recover them. The subsequent panels were purchased direct from the factory. There was about a one month production timeline when I ordered.  Excellent company.