Wow Disco. Sounds like we have the same luxury good taste.
Wow Disco, don't worry. This is the type of bag that you just have to buy both sizes. I have a pm in Rose Florentin, its so chic for evening, but it is simply too small for an everday bag. Also, the MM size turns heads when worn with trousers and a nice blouse. The pm size is better worn with skirts and dresses. This is why you need both sizes in your wardrobe.