HiDiamond P4 PC vs Nordost Valhalla PC

I am thinking of upgrading my main "from the wall" PC to Audience 6st power conditioner. Right now I use a Nordost Valhalla, which replaced an Elrod Statement (too unwield). The Valhalla is first rate, to my ears.

Would you consider a HiDiamond P4 be a step up from Valhalla, or a lateral step? Yes, I understand it is subjective, but only to as point.

Thanks,

Neal