Few are more deliberate than Langer.
Finding an LPGA Tour player who is
not slow takes some doing. Creamer and Pressel (and Wie, just to be fair
) are all really slow.
Ben Crane was the standard-bearer for years on the men's tour, but is said to be getting better.
On the other side of the coin, I continue to be impressed with the pace of play of Dustin Johnson. It may have cost him a major or two, but hey, it's good for the long-term health of the game.