My experience was similar to @audphile1 in that I did not experience improvements with the Puritan, and it had a slightly negative effect on my listening experience, though I could not say exactly what was wrong. I gave it sufficient time, running it for a couple weeks. I tried it with the Classic+ cord, and a Neotech cord, no significant difference.
My ultimate goal with power for my system is to get that late night sound 24/7. To replace the Puritan, I bought a used PS Audio P12 regenerator that I am using for my source components. I have had that in place for a couple of weeks, and it has brought me very close to my goal. I am impressed with the P12 for sure.
This is not meant to be a ding on the Puritan at all, it is well built and I am sure it is working well for a lot of people, it just did not do it for me.