In WPF which is better, to Screen Stack, or Load on Demand.

By ScreenStack, I mean to load all the screen dynamically onto a stack, and then set the visible property of all to false, except the one you want displayed. Like a stack of pancakes, popping the current screen to the top when you want it displayed.

Or … Don’t load the screens in advance, and then Load the screen you want on demand.

Both work … but I’m looking for pros/cons here.

Maybe a combination of both? If this is the case, what screens would I want to keep on the stack, and what screens would I load on demand? Why?

Thank you for your feedback / opinions.