I tend to keep the set back the same on all the planes.....

How many times, say while jointing the edge of a board, does the shaving come up, fall forward, and wrap around the wrist out by the front of a plane? The #7 and the #0-7 just make tight rolls.....same set up on the chipbreakers. I usually set mine about...1mm from the edge. The wedge on the #81 MAY curl things a bit, still acts like there is a wood magnet in my left wrist.....

Just something to ponder....