A lot of good info already provided. The part mentioned about over doing it with absorbers is of the most importance as it happened to me. Bottom line, a combo of bass traps, absorbers, absorbers/diffusers and diffusers in the right combination will get you the optimum results. What that combination is will be specific to your room. It's basically like equipment, cables, fuses, etc... There is not one for all fit. The best I can help anyone with is to take a look at my house of stereo acoustic setup under my details, system.
