Hi,
I can attest that addding dedicated power lines is one of those best tweaks to do for your system. We are moved into our new house and I added 5 dedicated lines, all with 3 strand 2.5MM thick cables in dedicated pipes in the walls. At the end, I am using HMS gold-rhodium power outlets and in the fuse box, I have a mix of silver or copper 500VA/16Amp AHP fuses with AHP Gold III fuse block for each fuse. The basement circuit is totally isolated from the top floor with the use of a electric splitter (I not sure what it is called) and I have noticed that any other appliances that are run, either sauna, fridge, lights, washer, dryer, have no impact at all in the listening room.
I also used the SST stuff on the advice of Rushton and have used it with great reults. I used only a sparing amount on my mono amp power cords only for experimental purposes and it seemed to add some sparkle to the system, this was almost 1 1/2 years ago. I will try to redo some of the connections in the new room to see what will change, right now with the new room and lines, the system is more alive and dynamic then ever before, so I will proceed slowly before doing some of these other fine tuning tweaks. Good luck,
Audioquest4life