Ok, don't want to start a war here, but which kind is most realistic? The snap-action type or turtles? Or has this subject been covered somewhere already? I see turnouts discussed all the time, and some of you like one kind or the other. But as for realism, is a fast acting snap movement more realistic or is the real thing slower. I'm planning a layout that will be focused around 1930 to 1940, with steamers.