I like both the Rosemary and the Roxanne. However, the Rosemary wins hands down for me, mainly because I don't carry much stuff and I like the versatility of having a bag that can be handheld or slung over the shoulder. I'm only 5'2" tall and the Rosemary looks good for my proportions. The Rosemary is deceiving as it looks small (I was shocked when I first saw it) but it has quite a spacious interior. I can fit my long purse, large CK sunglasses case, bunch of keys, mobile phone, address book and have had my umbrella in there a few times (on the odd day throughout the year when it rains here in Saudi) or else a small water bottle. The front pockets, although small, are just right to hold my lipstick, small compact mirror, and also my computer memory sticks.
I have a choc Roxanne, but it is boxier and therefore a little awkward when put over the shoulder - maybe it just needs to be used, so it softens up, but for now I view it as a hand held bag. It's currently away having a rivet replaced, but should be back soon. I don't view the Roxanne as being practical enough for my daily needs, when I'm running around town, grabbing shopping trolleys and carrying other shopping bags, but my plan has always been to use Roxy as hand luggage when whizzing through airports.
Anyway, enough of my chatting, I know pictures speak a thousand words.
Not the best picture, but this may help give you an idea.
I would say that choosing which to buy is down to personal needs. Do you carry a lot around? Do you prefer handheld or over the shoulder?