Never even saw this thread until I searched the forum for the word, "Wiha". I flew down to TX this past weekend to visit Walt for a IFR cert, and he asked me to remove the top cowl so he could hook up ground power to the plane. I asked if he had a Phillips screwdriver handy, and he handed me a Wiha brand screwdriver.
WHAT A DIFFERENCE!! I've used a variety of Craftsman, Klein, and others the whole time I built my plane. But with the Wiha, there was absolutely NO tendency to cam out and for the first time ever I didn't have to "push" hard on the screwdriver while applying torque. When I got home I promptly purchased a bunch of Wiha drivers online. It's stupid to be excited about screwdrivers, but I am now!