I love absolutely everything about this bag except for the following:
1.) I wish Osprey would have made the day pack a 25L bag, and the main pack 45L. The day pack is VERY tight on space yet the main is absolutely cavernous. A little more balance between the two in terms of volume would have suited me better.
2.) I wish there was more organization in both bags. There is nothing (pocket wise) on the outside of the main bag, but I understand why so I'm not too upset... but put a bit more into the inside at least. As for the day pack, side pockets would have been better than front ones... if you put something in the outside front pocket it eats away at the space inside, as the bag doesn't expand at all.
Otherwise, the bag is easy to carry, well balanced, very adjustable, super functional, and I love the fact that I have the day pack (even if it is a little too small).
When the backpack arrived I was a bit worried that it wouldn't be big enough for my trips, as I am usually on the road for several weeks. However, the backpack fits everything I need, is incredibly comfortable and super practical. I love the daypack as well, very handy. I has several backpacks before and always struggled at the airport with all the strips, usually the backpacks had to be shipped as "bulky luggage" and stored in special bags. With this one there is no problem anymore, you can just store the strips.