I have been looking at these speakers and they seem to be quite solid. I am currently running a couple satellite speakers and a 10in sub through a receiver at my desk and am looking to free up space (the receiver is the main culprit, I can deal with the av-40's size). How do the M-audio's do with bass? I know it really can't compare to the sub I have, but would I really miss it? (I don't have my room shaking with it, but I love me some bass). Also, what are your impressions about the speakers in terms of sound quality, build quality, etc.