I also have a very small room. I found it's essential to use absorber to deal with early reflection (place them in direct reflection points). Diffuser will also help in establishing good soundstage.
difussor's
I "think" im in need of some sort of diffusing on front wall of small listening room...I would be really interested to hear some experiences of some that have been through it...don't think I need an absorber type...as I have some bass traps in lower corner...just lacking clarity of sound stage...diffusor?