Talk to me about EVERYTHING purses

How do you conveniently switch your important stuff between purses if you have multiple?

What do you keep in your purse? I admire women who have a purse full of everything but I find mine gets heavy and inconvenient if I try to do that. What's worth it to you?

How many do you have? Sizes? Strap type? Styles, colors?

How much are you willing to spend on purses? Have you found a major difference between cheap and expensive purses, practically speaking?

How do you store them?

Is there a feature that's extremely important for a bag to have, in your opinion?