Hey all, I am looking to buy a bag for my MBP (prev gen) and would like some recommendations on one that would fit my criteria. -I want a bag that is almost like a briefcase, with the ability to hold as a briefcase and have an extra strap that can go around my shoulder if I wanted to wear the bag. -It should hold my 15" MBP, 1 textbook, a couple of folders, pens, and the magsafe charger. -It be slim and preferably in black Most bags I find on the internets all seem to be really bulky and fat, but I want a relatively slim bag. So, any recommendation?