Balanced versus single ended

From my experience, every situation that had both options, the balanced connection and/or increased gain sounded better, regardless of the bolume knob’s final position. More detail , air, emotional connection etc. The single ended cables used were good, not the bargain or so called high end extreme.

Sometimes using balanced or xlr it involved just the source, but optimally it carried through thd entire chain.

Anyways, my question is: has anyone ever thought that single ended sounded better?given the 2 options. Im only referring to a truly balanced connection.

I ask, because a manufacturer who makes tube amps, recommends single over balanced connection. Is there something else involved in this decision, additional parts or labor complexity? Is the signal path extended?

Thanks in advance