I don't know what your price range is, so here are a couple of ideas:
I have the MJ Blake and I really love it. I'm 31 and a professional--it works really well for work, but it's also good for the weekends. I like that it has three compartments. The middle section does not have a zipper, but it's really good for putting a file and/or agenda in the middle standing up. You can still carry the purse in your hands. It's great for putting magazines in there on the weekends or stashing catalogs while you're shopping. I haven't seen the taupe in person, but it might work... I know it came in other earthtones, so you might find it in a department store.
http://www.saksfifthavenue.com/main/ProductDetail.jsp?PRODUCT%3C%3Eprd_id=845524446126216&FOLDER%3C%3Efolder_id=282574491663283&ASSORTMENT%3C%3East_id=1408474395222441&bmUID=1138571548069&ev19=3:7
This Furla is cute, but it's a bit more casual:
http://www.neimanmarcus.com/store/catalog/prod.jhtml?itemId=prod22760016&parentId=cat7850737&masterId=cat7370750&index=34&cmCat=
I think this Ferragamo comes in brown/tan:
http://www.neimanmarcus.com/store/catalog/prod.jhtml?itemId=prod23660010&parentId=cat7860731&masterId=cat7370752&index=5&cmCat=
This Francesco Biasia is very reasonably priced and it's cute--it will fit over the shoulder too:
http://store.nordstrom.com/product/product.asp?styleid=2863479&refsid=172418&refcat=2376779~2376804~2378312~2381386&SourceID=&slotid=2&origin=related
If you want something more "slouchy," this Betsy Johnson looks attractive in photos AND it has a shoulder strap--but I don't know how it looks in real life:
http://store.nordstrom.com/product/product.asp?styleid=2874491&refsid=172418&refcat=2376779~2376804~2378312~2381386&SourceID=&slotid=1&origin=related
Good luck on your search!
