I agree with stevecham, rcprince and dodgealum.
I have owned both a VTPH-1mc and a [currently] VTPH-2. I have never wanted for a different sound. The original tubes were always very satisfying. I'd hang with those tubes for a year or two to see how the VTPH-2 sounds to you over the long run. That said, keep in touch with Keith Herron. He might just find a tube combination he thinks makes a favorable difference.
I have owned both a VTPH-1mc and a [currently] VTPH-2. I have never wanted for a different sound. The original tubes were always very satisfying. I'd hang with those tubes for a year or two to see how the VTPH-2 sounds to you over the long run. That said, keep in touch with Keith Herron. He might just find a tube combination he thinks makes a favorable difference.