I bought mine in 2007 (roughly 9 years ago from this review). It's been up and down California, all over Europe and shuttled between Southeast Asia and the US West Coast. It's extraordinarily sturdy. It's held 15" Windows and Mac laptops over that time. I like the front zippered pocket (inside the first zippered "crescent") as storage for keys, passport, etc.
Only six months ago, a vertical rip appeared alongside the front transition between the dark and light grey areas in the lower front. It was only a mild disappointment and not objectionable after a long service life with a person who stuffs things in there for long air flights. The laptop compartment has two sides. The interior side has padding on both sides. The bottom part is not well padded (some semi-rigid insert) so it may not be wise to drop the bag. I like the zip pouch on top for stowing all the little things I want to use on the plane or going through security-- it can hold a 1-quart zip lock bag easily. The two zippered side pouches are pretty steep. They're good for laptop power supplies and a bunch of food bars (remember to have them when flying!). My only ambivalent observation is that there are so many compartments. That's superb if you have a good organizational scheme and a memory to go with it. It can be nerve racking if you're random in your packing habits.
If it's any indication, I am leaning toward buying another one as a replacement. (That's the reason for a belated review; I'm comparing.)