I prefer the 9.6 over the 9.5 by a huge margin, but that's just me. I find the 9.5 unnaturally boomy. The 9.6 has a smoother overall response. Both have a bigger, darker sound than the 9.1 though.
If you can get the 9.cm, they're voiced closer to the 9.6. If you already have the 9.cs, then that would do.
The receiver can still high pass the 9.6 at a low frequency (40Hz-50Hz for example), and let the sub manage the extreme lows and LFE data. Both the 9.5 and the 9.6 roll off well before the quoted frequency limits.