What are the best Room Accustic Treaments members have found?


I  am looking into adding some room acoustic treatments to my room.  I am just looking for advice on some simple room treatments that fellow members found worthy of purchase. 
128x128davidrolson
GIK Acoustics by far offer the most effective and best value.

Also great advice.
There is also ATS acoustics in Piper City Illinois. Can purchase factory made or DIY.
GIK Acoustics
Agree! Call them. Send them photos. They will help prioritize what it is best for your situation - biggest bang for your bucks. Very good, scientifically-based products, very good value, and excellent customer service.