splurged on a designer diaper bag?

I am trying to decide on a diaper bag. I don't want to carry something the color of a crayola box but something subtle that can be used as a tote later or professional work bag.  I am looking at the burberry diaper bag collections- does anyone have any experience with any of those bags or something on the higher end?  It's my push present to myself and I work hard so I want something nice!!!