Nobody likes to be on the receiving end of a harangue and we’ll wager that not many of us like delivering them, either. And that’s the problem with magazine articles reviewing aviation safety equipment. What starts out as friendly advice on buying safety gear devolves into a lecture from your Aunt Hazel on the perils of running outside with your hair wet and, oh, by the way, when are you going to get a real job and stop hanging out with those loser friends of yours? With this in mind, we’re going to alter course and withdraw our previous recommendation that every GA airplane should have personal flotation devices as…