I've gone for a city! I'm currently pregnant due Sept 3rd and think it'll make a very good (and stylish) mummy bag as it has the long strap. A lot of my purses are hand carry's can't imagine trying to battle with a pram too!
Congrats! Love the colour combo. I recommend getting a bag that can be worn cross body. As a mom to a toddler, I struggle to use my City because of the short strap.