Where a tone sits in a mix is total personal preference & I respect that. I figured out a long time ago that when you put up tone clips, people literally hear things differently and opinions are like assholes. Everyone has one, and nobody wants to hear yours!
On the transformers, here's an open challenge for anyone. Take an amp and close mic reamp it like you're recording for an album. Now swap transformers to whatever the "other" one is for that amp. Re-bias to match if you're swapping the PT. Now without touching anything else, reamp that version. Now level match, splice & compare. In a blind test I can all but guarantee no one would be able to tell the difference.
I've done this for PTs, power tubes, spongy / bold voltage, tube / diode, pentode / triode, Class A / Simul. All these things we think we hear in the room make effectively no difference in a properly reamped, level matched close mic recording.
Here's an example comparing JJ 6L6 running 34 mA vs. EH EL34 running 16 mA. Close your eyes & tell me where the change is.