Dedicated Lines & Power Conditioners

Sailfishben, just another data point: when the dedicated circuit is installed as a home run line from a single outlet to the circuit panel (as I believe many of us have done), an additional benefit gained is not having any connections or splices in the line. Every time there is a connection (whether through a junction box or an intermediate outlet on the line, even if unused), there is the opportunity for micro arcing at that connection. This introduces distortion spikes on the line and these spikes can have an impact. So, when we talk about running dedicated lines, we should additionally make clear that these ideally should be dedicated home run lines to each outlet.
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"micro arcing at that connection. This introduces distortion spikes on the line and these spikes can have an impact".

Micro arcing??? How do you guys come up with this stuff?

Iv'e noted sizzle or "micro-arcing" from Zinsco brand circut breakers (common in older houses) you can actually hear coming from the breaker with heavy load applied. When different re-conditioned (no longer available new) or used circut breakers exchanged in audio circut, difference is quite audible. With a dedicated circut I am beginning to think the main quality difference is in the straight run of wire instead going through a series of brass screws on receptacles, Will start a new thread soon on my home setup.