I wish someone had told me back in 2014 exactly what I'd gain by upgrading from v2 to v4. I suffered needlessly for almost 5 years. What Axiom has achieved with v4 has to be heard across various models of the family to be fully appreciated. There was tremendous intent and passion in the v4 design across the entire family.

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