Sampras', and then +/- as you wish, because some parts of a motion just won't gel with the individual. Instead of trying to be a carbon copy of a particular motion, take the concept behind the motion, and mold it into your own. That's what I did
Couple things I removed from Sampras' motion were:
- The "take-aim" part where he brings his racquet and ball forward before he starts the the motion. That's just too much motion for me, and it messed up my rhythm. I kept a small part for it, but I didn't bring the racquet/ball up to my face.
- The "high-elbow" finish. I just couldn't do it.