I think that the only way that owning synergistically matched components saves one any money at all is that, perhaps, one churns components less. But I think that the true benefit of a synergistic system is that it brings the listener a greater connection with, and appreciation of, the music. I never said that it was about money.
If you are happy with the whole class thing I should be the last to try to dissuade you. But since you brought up turntables and cartridges I will give an example. On VPI tables with the shorter, unipivot arms, IMHO Dynavector cartridges are a synergistic match. Not so Ortofons. So I would rather have a 20XL2, which might be a class B or C cartridge on this type of tonearm than an Ortofon Anna which is clearly a class A phono cartridge. Your mileage may vary.
Unfortunately the last time that I listened to a Polk speaker was when I met Matt Polk and Saul Marantz demonstrating the model 10 speakers at an audio show in the 1970s, so my opinions on the marque will have very little currency.

