Usblues - I too have been waiting to finally get back to Artg's home and hear his latest round of changes since I was there last Fall. I am still waiting for an invite since the holidays. 8-(~
It was Artg who suggested I try the Audio Magic PLC and this is wonderful. It may not be the ULTIMATE PLC, but it was the biggest change I ever made to my system as it was like upgrading 5 components at once.
Since I am also in the twin cities (west metro), and have a ton of tubes as well, if you ever feel cold, come on over to warm up from the glow. And I can give you a with and w/o comparison of what the Audio Magic does. I understand the IsoClean that Artg uses is quite a step up but I'm a happy camper with the AM.
As for power cables, Artg, Jadem6 and I have tried so many of these in our three systems. So far for me, the power cable to beat is the Purist Dominus. So if you're interested, I could bring over a couple Dominus to give you an idea of their benefits.
As for isolation, Jadem6 is VERY knowledgeable on this subject. In fact he is downright a perfectionist here. He too lives in the west metro. I am sure he would have a ton of ideas for you.
John