Feedback on Costco & Amazon sound absorption panels from folks who have purchased them.

Greetings.  My wife & I have purchased a new home (to us) and I am extremely fortunate enough to be getting a 19 X 21 foot room for my stereo.  The home is getting all new vinyl plank flooring throughout.  This rooms floor will have a nice large area rug of some sort to help with sound control.  My wife has been searching around for wall treatments and found the Artika panels at Costco and a plethora of choices on Amazon.   Looking for input on users and if you are happy with your choices.  I need to keep it aesthetically pleasing so no chunks of foam glued to the wall.  System is: Krell FPB300cx amp, KCT pre and Infinity Renaissance 90 speakers for reference,

Thanks for any input to a regular guy that just happens to dig quality sound. -John