Best Power Conditioner?

You may want to add Foundation Research into your list. FR makes passive in-line conditioners that take the place of an aftermarkter power cord. These are about as expensive as most active power conditioners but I believe do as much if not more that most in the list above.

Of course, the Foundation Research in-line conditioners, passive conditioners that they are, do not regenerate electrical current.

Foundation Research is a little known company a few hours outside of Toronto, Canada with Ed Wolkow as the Chief owner/designer. He also makes SS amplifiers and tubed preamplifiers that are supposedly out of this world. His new V6 preamp has been touted by some as the very best.

I am using two LC-1's for my source and pre and an LC-2 for my amp. At the very least, you would notice a much lowered noise floor, better imaging and soundstaging, and a vast reduction in sibilance with the addition of each LC into the mix.

-IME

Flemke, yes, you will notice improvements based on your suggested endeavors.

However, the topic here is recommended power conditioners, and if you haven't done so yet, you will notice a still lowered noise floor/blacker background, minimized sibilance, better imaging and soundstaging with proper power conditioning.

Of course, that's assuming one obtain's decent power conditioner(s).

I do believe power conditioning demonstrates it greatest impact when installed in an environment where lines are not dedicated and perhaps digital and analog are shared on same circuit. In other words, the dirtier the AC, the easier it is to hear the positive affects of proper power conditioning. Diminishing returns, you know.

-IME