O/S Muse vs Downtown

[sheherezade]

Which of these would you use for travelling or other times when you need to carry a lot around with you?
Also, is the Muse rigid or slouchy? I've never seen one irl, but there is a couple of pictures of Kate Moss and her white Muse where it looks like the bag might slouch a bit if it was empty.

 

[gr8heart]

Perhaps the very broken-in or well-used muses are slouchy, but mine is still a little stiff and stands up perfect when empty, even though I bought it over a year ago.