[Loren]

OK after all this which is better for a swinger,flat or rotated?

No opinion. Preference here seems to be flat, and up to the 7th edition it was.
Reluctant to change.
But I'm not convinced the Rotated Shoulder Turn always requires a shiftless hip turn.
The wording is ambiguous. Especially since the hip turn specified is Slide.
According to rumor, it may be an unintentional change.
My body does not like rotating, at my age, but I could be doin' it wrong.
So I'm hitting, or trying to, with a flat backstroke shoulder turn, on-plane downstroke.

Don't change something that's not broken.
I wouldn't suggest ndwolfe change his, except maybe downstroke and axis tilt.