Another vote to the center channel.
As you already have enough power to even phantom over your Vp100
with the 80s. Get something with enough force to stand up with them.
I my self have a VP160 paired with my M80s.
The first thought I had when hooked up the Vp160 was HOLY the sound stage was huge. Though I went from a klipsch C20 from 2012
before I even knew of Axiom, the difference was huge.