This will likely be long with a lot of useless information. In summary, buy some Pinwoofer kits.
I kept reading posts with people raving about the Pinwoofer kit. The reviews were overwhelmingly positive, kinda like the Amazon reviews where they give away free stuff if you give a positive review. Fakespot doesn't work on Pinside, so I had to give it a try. Unfortunately I had to pay for it. My Metallica already had a Flipper Fidelity kit, but a lot of the reviews were specifically for Metallica, so I'll jump on the bandwagon.
Audiophiles and wine experts are an interesting breed, and largely full of crap. I've fallen into the trap myself, expensive phono cartridges, preamps, constantly changing out components, etc. The question is, how can you give an honest review after you just spent a bunch of money and time? Of course you want it to sound better and will probably talk yourself into thinking it sounds better, especially if everyone is saying it sounds better.
The only way to make a fair comparison would be to A/B them side by side, not an hour later. You would need to record it. Cell phone video won't do, needs to be something with better quality.