Who Tried Power Conditioners Over The Years and No Longer Use Them Today, Any Why?

When my PS Audio  AC Junction box overheated and bit the dust, I replaced it with a generic TripLite box that happened to be in the house. Son of a gun, the stereo sounded better with the TripLite. I still though, connect the TripLite to my groovy PS audio wall outlets with the hefty PS Audio AC cord that came with the PS Audio box. Agreed, I was never able to do  back-and-forth comparisons, but I just don't care enough to fret over it. I'm getting good sound, and that's enough.

As @ebm said it will depend how resolving your system is.

I have dedicated 200 amp service and I am isolated from the rest of the house. Only my system is on this circuit. I also have Signal Cable power cords and interconnects on my system.
In the past I had several different power conditioners on my system and now I have my AH X200 direct to Hubbell IG5362 Duplex Receptacle and my other components pulling power from a Furman SS-6B-PRO with the NFC Line Conditioner. Thinking of upgrading the Furman looking at the iFi or AQ1200 Will buy where I will have return privileges..

Will buy where I will have return privileges.

@jerryg123 , that's what I did with the AQ5000 and it stayed.

One thing that has changed since the 90's is the explosion of devices that make up the average home. I'm sure there are papers out there that document how much the noise environment has changed.

@wrm57 Yes not sure I would need the AQ5000 only have 5 components and AH X200 is not that huge of a power hogg.