My Adcom ACE 515 actually sounds a little more "liquid" than some other PLC's that i have. I do know that it does not filter nearly as well though. Pops and ticks generated from other electrical equipment come right through the speakers when i use it but they disappear when i use the other filters.
With that in mind, maybe what some of the reviewers and golden ears say about "series" filters is true. The more filtering that you put in series with your components, the more life that it strips away from the music. Since the Panamax has more filtering than some of the other designs on the market, your ears and experience may confirm that point of view.
I've been playing with parallel filters ( Quiet Lines, etc... ) and will soon be building some that David Magnan suggested. That is, when all the parts finally show up. None the less, i don't know how willing i am to expose all of my components to the perils of what comes directly out of the wall sockets.
Anybody ever play with putting a MASSIVE amount of MOV's at the mains of their house ??? Sean