I like photo 6 in the sequence on :-http://www.hickorygolfers.com/swings/bobbyjones/index.htm
Looks really balanced, great leg action, and no extreme axis tilt. I think that once i discovered concept of axis tilt...I started to overdo it...and then you feel the strain !
I like Bobby's knee action. Standard, right? I think straightening the knee helps get your right glute behind, el squatto helps the "down." Similar to the sweetest of them all...the Slammer!