jade above mentioned Brahmin, they are in the same price range, and all shapes, leathers, some beautiful colors, many great bags, check them out if you haven't lately.
I used to be a big fan of Dooney & Bourke and had a long time love affair with Coach. Dooney is classic and very durable. Coach is trendy and a tad more expensive than Dooney. From my experience my Dooney bags have proven to be more durable. I haven't bought either brands in a couple years now and have never owned a MK. I have liquidated my closet of Dooney and Coach and I am building my Louis Vuitton collection.
To be honest I would prefer to vote on a particular bag -In saying that Choose what you love- all three brands have bags I would carry but then again I have seen styles from all three I wouldn't.what I'm really saying its too much of a generalisation do you have anything in mind?