GIK has great customer service. They are extremely responsive to questions and very helpful.
I had a very reflective, small room with 9 foot ceilings and they helped me configure placement and selection. This room had a very strong echo, but using GIK's recommendations, the room is NOW very absorbent, but not a dead room which was my concern due to its size.
When anyone would have a general conversation in the room, the sound would reverberate off the walls and sound hollow. You can't imagine what it was like when I raised the volume on audio or when my wife was yelling at me to get the hell out of that room.
After using their product, it's a delight to not only converse in my room, but audio is considerably much more pleasant.
In the end, I am a convert that before upgrading or even the initial step of placing audio equipment in a room, treat the room even if at a minimal level. I had concerns that the treatments would be gaudy and not attractive, but in time, you don't even notice them from a visual standpoint. I did a combination of off white and black colors.
My only suggestion to GIK and I've spoken with Glen about this is to place more photos on the web site to show real time home application of their product line. Besides that comment, I'd highly recommend them.
Great customer service, affordable and money well spent for someone who wants to experience the best output from their equipment.