This backpack is everything those 5-star reviews say - slick, elegant, and compact. Also, it seems to be roomy enough - at least my 15 inch MacBook Pro fits in it just fine. There is only one thing that I find disappointing - the sleeve for the suitcase is fairly wide and not removable. In fact, the back has two nice "rails" that should help ventilation, but the sleeve covers about 1/3 of it and just seems to kill the purpose of those "rails". In hot weather this is exactly the spot where one's back would be sweating. I wish that sleeve just was not there or was removable. If it were a cheaper backpack, I would probably just cut it out (may be I will, after I use it for sometime). I am planning to ride my bicycle with this backpack, so for me back ventilation is crucial, and I don't travel that much, so the sleeve is not really that important. For some folks it might not be a big deal.
I hate to take one star off from my rating, but I think this particular element was not well thought through. Other than that, it's a very nice backpack - it's great to know that I can carry a backpack and look fairly professional at the same time.