Messenger Bag for Laptop + Occasional DSLR (one lens only)

I have been using a 7 year old bag-pack looking right now which is good for a laptop but too small for a dslr and other stuff.

My usage is primarily laptop and only occasionally camera. Messenger bags have piqued an interest in me.

Was wondering if the forummers could point me in the right direction. Budget is a little tight, will try to look for Black friday deals once i zero in on the product.