Jim to take the bass as deep as possible in each model - because subs are inherently difficult.The CS2.4 has useful output down to ~30 Hz. The 3-series down to upper 20s. The CS7.2 down to the mid 20s. Compare those to the lowest fundamentals of all but an organ:http://acousticslab.org/psychoacoustics/PMFiles/Module05.htm
Until I win the lottery, I'm going to put my money where >99% of the musical content is.
I once heard the Wilson W/P 7. On a live recording, it produced an eery facsimile of the hall. I've never heard anything quite like it and I initially ascribed it to the Wilson's low bass. But, while that model does have some useful sub 30 energy, turns out I was hearing the Wilson mid-bass hump; a pleasing *coloration*!