In reply to Pyreneenemec:
Here in Germany and in Austria, one sees a *lot* of Deuter packs. I had a big 65 or 75 litre one in South Africa and it was very nicely made and very well thought out and very comfortable but also ridiculously heavy.
I now have an Osprey (65, I think) and it's pretty cool. It weighs a lot less but isn't as well thought out as my old Deuter - there's just something about the Osprey that doesn't quite "work" - I can't put my finger on it.
My moderate pack is by Black Diamond and it's incredible - certainly the best pack I have ever had. It's also the one that has sustained the most abuse and it keeps going - I think it has some holes in the side pockets, it smells like old climbing shoes and it looks like it has been dragged through every underground station in London but it is still the most comfortable thing I have ever carried.