Well I just recently added a few absorption panels from ATS Acoustics (3) 2'x2'x4" & (1) 2'x4'x4". The build quality is outstanding & their fabric choices are pretty extensive. These new panels combined with my GIK monster bass trap (1) 2'x4'6" & the Echo Busters corner traps (2ea) have really put a smile on my face. It's so hard to believe what actually happens. The music just takes on a whole new presence, the bass is just so tight now I can hardly believe it. My friends actually checked to see if my SVS sub was on. They couldn't believe it either. The vocals & instruments are so well defined & the soundstage has taken on a whole new dimension. I'm telling you if you've never thought about treating your room - mistake - BIG MISTAKE!!! It has got to be the best bang for the buck you can possibly spend. Forget about new cables, IC's, power cords, just get involved with your room. By the way ATSacoustics.com is the most reasonably priced company I have found to date. They only do absorption panels but are working on bass traps. They also sell all the material for the DIY crowd. But for me they were so cheap it didn't make sense to go the DIY route. Just do it!!!!