I love my Azur 25! I can wear it to work, hang with the girls, and out on dates! At first I had problems filling it up (because I hate the way empty speedies look) but now I'm always prepared for the worst! I carry my wallet, ipod, umbrella, book, cosmetic case, sidekick, scarf, keys, and pepper-spray! I know my arm would ache if I tried to fill up a 30! A bag that big should be used a shoulder bag. Get the 25!