XML gives me a sick headache every time I work with it. Storable, as you know, just works.

If you think there would be any chance that someone else would try and interface with your program via data structures, you would probably want to give XML a shot. If that's not an issue, Storable is clearly the best.

They are both non-core modules wrapped around C libraries, so I don't think there's any particular convenience to using one over the other.

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Jeremy
I didn't believe in evil until I dated it.