2006 perfect
Something about that shot doesn't look "perfect" to me. Maybe his height, maybe lats too small, torso not defined, arms too small, list goes on. Not a hater, just stating the imperfections in my eyes.
I reckon a "perfect" physique in the eyes of the general BBing fan is that of a small waist, X frame, some mass (thickness) while ripped to shreds. Guys like Arnie, Sergio, Paris, Ronnie (earlier years) and so on.
Hard to say who has the most perfect of all time, but I'd like to look like Flex for sure. Who wouldn't? Maybe a bit bigger with same size waist.