@mwh777 I also have a BS Node (N130). The LHY LPS improvement was not subtle.
I'm an "everything matters to a point" guy, so skeptical about spending money on LPS PCs - after all the LPS is supposed to provide clean, linear power right?
Having said that, I can test this with a broken in PC that I already own, and I will start with the LHY LPS later today and report back.