Lots of options out there, but I'm thrilled with SoundAssured. I'm a musician/drummer with a music/recording room. I ordered 96 of the 12x12 3in wedge panels that provide excellent coverage for the walls and ceiling. Easily installed with tiny dress pins (see YouTube). I'll be ordering 4 bass traps in the near future. Save your ears and improve your sound. Order today.
We installed several of these in the fellowship hall in the church. The echo that used to be in the room is gone and the sound levels have dropped dramatically. I recommend this product!