I think it's strictly a matter of personal preference. I prefer the Birkin because I think
it has a more casual look which is more suited to my lifestyle. It's also easier to get
into. I also have a smaller Kelly (28 cm) which I like for slightly more dressy use, like
going out for dinner. Hope this helps.
Oops. I pressed Birkin because I am more of a Birkin gal than a Kelly gal. HOWEVER, I didn't read the poll properly and should have pressed Kelly because although I prefer the Birkin for my lifestyle, I DO think that the Kelly is Prettier.