I ended up with an Osprey Aether, not sure off hand how many liters. It is heavier than the other models I was looking at, but I could try it on and get it fitted locally. The other models that I could try on locally that were lighter just didn't fit right. And to be honest I'm a bit of a feature hound - I love that I can hook my poles up out of the way or just free up my hands.

For overnights I do end up usually using a different pack - which is my Camelback backpack.