I tried JPS Labs Analog and Shunyata Sidewinder and found almost no difference. Slightly softer bass with the JPS, and smaller soundstage with the Shunyata, as I recall. I've also found my Karik CD player to be almost immune to PC's. I think Linn power supplies are so well designed and built that PC's are of limited value. I spent that money elsewhere. I should add, though, that I use a power conditioner (Tice) to great effect. I auditioned the PC's on my Lingo both into the Tice and straight into dedicated lines. I also use a JPS Power AC on my amp, straight into the wall, so I'm not prejudiced against PC's.
