I have the same bag and I love it! I use a mono compact zippy with mine right now but I'd love a vernis zippy or an EPI. The only thing I'm watching for is the colour of the zipper. I want golden with golden.
Good luck, I'll be watching your post for peoples' suggestions!
Thanks for the reply everyone! I'm now even more confuse. I'm considering buying a new bag instead of a purse. I'm so indecisive at the mo.
I like all your ideas but now wondering if its more practical to continue ahead and buy the batignolles horizontal as i'm thinking about going back to school. My budget is limited too and can only buy one item. I'm setting my limit to £500. All i need now is stick to it.