The best I have ever witnessed as far as an entire round was my old teacher Wayne Defrancesco while caddying for him in an Open qualifier. 7200 yards or so, he hit 16 greens - other 2 were on the fringe...including the stick on a par 3 from 240. Amazing.
As far as on tour - I agree. Freddie seems to hit every shot so pure...and Vijay is as good as it gets. Els was pretty damn impressive too. The straightest I have seen is Furyk.
Hmmm...who else. I never saw Trevino but everyone raves about him and of course Clampett as well.