Coronado Leather makes a fine CCW purse. They are the only retailer I would ever buy another purse from. I carried one for 3 straight years (before getting tired of the style and wanting something different). They are the only dedicated purse manufacturer that I have found can make a product that looks good AND functions well. I have a laundry list of criticisms for 90% of the CCW purses available. I've carried for 12+ years in a purse so I've had plenty of experience.
That said, I have used several off-the-shelf purses from big box stores and made them work just as well too, though admittedly they served their purpose for shorter time frames since they never stand up to the wear and tear of a firearm's weight as well as those "designed" for it.
I finally just decided to go with the real deal. I currently carry a Maxpedition Fatboy G.T.G. But there is a Colossus sitting on the secretary waiting to become my new purse. I just haven't made the transfer of stuff yet. (Best part of the Colossus is that it has TWO CCW compartments.)