Did anyone return a PSAudio Powerplant? Why?

PS Audio power plants are probably the biggest selling name out there.  I'm sure they have been returned.  

In other hobbies I've noticed a tendency of people to get confused when the widest selling item has a few issues documented on the internet.  Indeed, if there are 10x as many of these out there and they've been out there longer than the competition, there will be stories.

Jerry

I know they are popular and successful. Just wanted to know in which situations they may not be beneficial. Regenerators and conditioners are very system dependent. Hope to get some insight before I try a home demo of each. 

If you already have clean power it may not be beneficial....one way to find out. Summer in the US is a good time to try one with all the HVACs running - my power is dirty at 4% THD. I love my PP15 - bit of fried gold, that.