It's hard for me to read the forums at Audiogon sometimes. I try to read other people's opinion on certain equipment, and eventually every thread starts turning into a snake oil bragging contest. Their power cords, RCA cables, or magic bag of rocks added that last little bit of air to the soundstage....
The companies who sell this stuff are laughing all the way to the bank. Jokes on me for not taking advantage myself, I guess.
Source, amp, speakers are 95% of the equipment concerns, and where the money needs to go. Make sure your interconnects aren't faulty, your power cords are rated for the equipment load, and then get your room acoustics right.