Perfect size for  2-3 day trips.  In combination with the packing cubes, etc... I can fit 2-3 days of business casual clothes and workout clothes.  I have only had the bag for about a month so I cannot speak to durability, but the quality of build looks/feels very solid.

I've read some reviews complaining about not enough pockets, not sure what the advantage of multiple compartments/pockets is vs. overall space that you can put the same things in without size shape being dictated by pocket shape/size.  There are pockets that provide more than enough space options.

Also, I've read some reviews that laptop bag does not fit on top due to narrowing of bag.  I did not find this issue at all, in fact my computer bag fit better on this bag than on my full size luggage bag.  I think your computer bag/straps will determine how well this works, but it has been a plus for me.

The only reason I gave it 4 stars and not 5 is it is billed as airline overhead compliant.  I've only had four flights and I'm shooting 50/50% on allowing me to carry on or check at the ramp.  The bag easily fits into the overhead compartments.  Will depend on the crew, flight, etc...  With this said I would not want a bag any smaller than this and my bag was waiting for me in the walkway/ramp when I got off each time.

Bottom line:  Great bag, solid construction, and perfect size for 2-3 days of travel.  I would not want/need a bag any smaller.  However, some airline crews will make you check it at the gate, real hit or miss.  Did not inconvenience me but if you want a true carry on consider a smaller bag.

Update;  2 years later and moderate to heavy use, holding up great.  Still about  50% chance of not allowed as carry on.  But love this bag.