I bought this backpack about a month ago and it has fit perfectly in to my life. There are four key compartments that I utilize:
-The laptop section is great for my 15" MBP and also throwing my cables in
-The mid-section is great for putting books and has good side slots for snacks and stuff
-The front compartment is good for my pens/pencil and calculator
-The top hardened compartment is great for putting my sunglasses (the zipper on this is pretty stiff given the material so it's not easy to access this slot when bag is still on a shoulder)
The cross buckle in the front of the bag allows you to slide it up and down (I don't use this and find it kind of annoying that it can't be removed with ease).
Overall the zippers and material of the bag feels great and the shoulder straps work well.