I was tossing up between these two and went with the Insolite because of the layout of the compartments and what I could fit in it. The open compartments of the Sarah didn't sit so well with me - and, as I wasn't purchasing from the MC line, the Insolite has the gorgeous coloured interiors that the mono Sarah doesn't.
Definitely Sarah hand down without a doubt! It has a more classic look to it and is more practical and functional in my opinion. I don´t like that the Insolite folds out/that you can open it completely so Sarah seems more secure in that sense.