What power conditioner

Same as any other component: ignore the story, buy the sound. 

I have owned quite a few PCs over the decades Im very happy with Core Power from Underwood HiFi

I would recommend a in-home audition of gigawatt. The overall buzz is positive but only by listening in your system would yield the ultimate test of it’s effectiveness and synergy. 

Whatever you do, please don’t fall for band-aid fixes on power correction that some of the posters here shamelessly promote :-)