Now that I think about it, my favorite backpack of all time though is a 35litre Lowe Alpine bag I bought about 10 years ago.

It is very comfortable and has a great harness, and is waterproof. I had a waterbottle in a side pocket that leaked, and the pocket held the water inside while not letting it transfer through to the main compartment. I had to pour the water out of the pocket. Simple main compartment with two pockets in the lid and two external side pockets. Lots of lash down points.

You can't shoulder check easily with it fully loaded but it sits snugly, doesn't move around and lets me carry really heavy loads (groceries, cat litter etc) in comfort.

I doubt they still make this model, but I wouldn't hesitate to buy from Lowe Alpine again. Like the poster above mentioned, I am pretty sure this bag was designed for backcountry skiing.