I've never experienced leakage of fresh cells either, always been things I've left sitting around for extended periods and forgot about. I do use eneloops in my good flashlights, just to avoid the problem altogether. Still use alkalines in cheap flashlights and appreciate that I can use them in the good ones in an emergency.
Wayne
18 years at the same very hot and dirty foundry using nothing but AA batteries and my experience is the same. Never have I had or seen anyone have a leak with daily use. The only time I have seen that is from old remotes or clocks that had old batteries in them for years.