After auditioning a few units around the price range of the Herron VTPH-2, I chose the VTPH-2. It has the black background and dynamics of the Parasound JC-3, the finesse and beautiful midrange of the Fosgate Signature and the flexibility, bass and clarity of the Zesto Andros.
For me in my system, in comparison to the Herron VTPH-2 the JC-3 was a touch too dry, the Fosgate a little noisy and lacking dynamics and the Andros a little too polite.
Bonus is that Keith Herron is a great guy and a pleasure to deal with.