I spoke to the designers at Mark Levinson and Simaudio and they both said to avoid power conditioning. Both manufacturers build substantial power regulation into their equipment and do not require additional power filtration. Their equipment is designed to be plugged directly into the wall. I bet your high end equipment designers would tell you something similar (and would be happy to answer your questions in this regard).
I guess if your home power doesn't provide adequate voltage you might consider a power regenerator but otherwise I think you're on the right track.
The one thing that did help in my system was isolating the my Meridian Sooloos MS600 digital front end from the rest of my system by adding power filtration between that particular component and my power bar. I found it was adding noise to the power supply of my system.