One forum member chose the 601 series IIs over 80s, 22s, M3s and Nuance. In the 17 years of owning 601s, I could never get them to simulate depth and imaging to the left and right of centre inside the speaker boundaries. Then when I got the 80s I was shocked with how much mid-range, treble and lows I was missing with the 601s. And the imaging with the 80s was nothing short of miraculous.

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