I started with 991s and have followed this series along to 993s for their fit and comfort of my relatively small foot.
Follow up: Comfort was unsurpassed, however, after 13-months and an estimated 500 miles (3 miles every other day), surprisingly, the soles of these shoes wore through the black outer sole and into the soft white layer.  The worn spot is as big as a baseball.  I have two other pair of 991s that are several years old that I retired and currently use for outdoor workshoes.  Neither pair has this type of ware.  I downgraded by rating to 1 from 5 stars.