"I can't get through my day without this bag"
This bag has everything that I need. Perfect number of pockets, my 15" macbook pro fits perfectly inside the laptop compartment, it rests perfect on my shoulders, and it looks great! I use it for work, for volunteering, and when I feel like exploring a new place and need a bag to hold my water, snacks, etc. I can't imagine going without it.
"Great Substitute for a Traditional Briefcase, with one small issue"
Bag has plenty of room for my laptop, papers, and supplies, and in black/grey is not out of place in the board room. My only complaint is that one of the clip straps on the flap has a tendency to slip -- not a deal breaker, but annoying.
What's in your bag? Uhhh, something of everything. This holds at least two large 1" binders, books, water bottle, iPad, a 15" laptop+charger, misc pens, yadda yadda. The strap is comfortable and the adjustment points on it set it apart not to mention the tablet pocket on the back of the bag for easy access. I'm not a fan (did you know that's short for fanatic?) for the velcro closure of the bag flap, but I'll live. Good for commuting and daresay would be ok for bike commuting if you live in a place where such is possible without having a target on you for enraged drivers - I, do not live in such a place so the bike+bag thing take with a grain of salt.