According to Ian and Craig Chase, there really is no prime listening position with LFRs. There is stereo everywhere.

If you like pounding, the active 1100s will play more than 10 dB louder than the M100s; according to specs, they're good to 129 dB at 3 feet away. That basically means if you provided them with the 4400 Watts peak they're good for, at 3 feet away they'd blow off both of your 'nads while they liquified your brain. And they'd do it in 3D. laugh

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated