"When I went from VP100 to VP180 I found that the center signal was now "wider" (not a surprise) and that the result seemed much more natural and true to the video..."

Ditto when I went from 150v2 to 160v4. Plus, much higher fidelity and understandability.

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