@plottwisttiffany: time for the verdict: these bags hold a surprisingly similar amount of stuff. yes you can fit a little bit more in the large Naomi then in the large koala but overall I think if one bag works for you the other would probably work very well as long as you can go back and forth between the shoulder and a crossbody bag. these are two of the most iconic bags from @PORTLAND LEATHER GOODS with their unique shape and quality full grain leather no matter which bag you choose you're going to have a quality product that will last you a lifetime!