I recently bought Lowepro Adventura 170 from flipkart for my D5100, currently selling for Rs.1615.
It is not much of a looker but is cozy for the camera. It has enough space for a lens and a flash alongwith the camera (might even hold 2 lenses minus the flash).
It also claims to be waterproof to some extent.
There is even an ugly blue version for 200 bucks less. Lowepro Adventura 170 DSLR Shoulder Bag | Camera Bag | Flipkart.com
