Aerial 6's lighter in the low end than the 7b's...

I own the 6's and find them very satisfactory in the bass area; my radio shack SPL meter gives me flat response with the 6's down to about 35 Hz (aside from room interaction - see below). As always with bass, it really depends on your room. Look at it this way - we can presume a lot of "science" goes in to balancing a speaker of this price and from a respected designer. How much "science" went into your listening room? The point is that the variables your room presents is probably always a much larger factor in performance than the variables even cheaper speakers present. My room has a huge "suckout" at 60 Hz and a bloat at other frequencies both higher and lower that drive me nuts. I don't think that different speakers in my room would solve anything. Anyway, I highly recommend the Aerials - for one 7 inch driver, bass is really good, tight, and accurate down to the specified LFE. I can tell you that of the other speakers I have owned, PSB Gold i's, B&W Matrix 802 III's, NHT super 2's (yeah, I know, not fair), the Aerial has by far the best quality (the B&W's were close) though of course not the lowest. NOW, having said all that, I wish I had the 7b's for my room which is 13 X 22 - but I will not exchange them because I know I will be moving to a smaller house soon. So for a small room, definitely the 6's...