If you do go for the Cala, it's on sale at thepursestore.com:
http://www.thepursestore.com/page/T/CTGY/_Gus
35% off!!
And I think you can use the code "grechen" for 20% off.
I think I recommended the Cala to you in your grey bag thread...it's ideal! SSSSOOOOO soft and very easy to get into. It's like their Baca in the sense that it can hold much more than it seems and although I love both Gustto and Hayden Harnett, I love my Cala.