Bob Atkins , May 09, 1999; 10:28 p.m.
I think you have to answer this yourself, there's no "right" choice. It very much depends on how much YOU value autofocus, whether YOU need the extra stop for the work you do, if YOU are prepared to carry the extra weight of the larger lens etc. An extra stop is useful, but so is AF.
Since you've had the chance to use both lenses in the field and evaluate their performance, you're in a MUCH better position than most people to make the choice!
The obvious answer is to buy both of them of course, but I won't even suggest that one...