Great top loading pack
I recently picked up the 2012 Kestrel 32 and 38. Sometimes using a panel-loader is easier, but I got the 38 for when I'm carrying dayhike gear for the kids. I've always liked the Kestrel series but I think the 2012 version is even better than the previous versions. The pack seems true to its stated size, the hip belt pockets can be open/closed with one hand, the top lid pocket is generous, and the harness is extremely comfortable.
The build quality seems excellent; very sturdy pack.
I'll use this for dayhikes with the family where I'm carrying everything, day trips to the beach, and traveling (should be good for carry-on unless completely stuffed).