In reply to Helnorris:
I've had an Exos 46 for the last 8 months and I think it's great!
Good:
It's so light!
Big enough for multi-day with tent/food etc
Comfy enough to use as a daysack (its lighter than my 35 litre)
Pretty tough even though it looks flimsy
Side compression straps are useful
Bad:
Annoying that it won't stand up on its own because of the frame, it needs to lean on something or it will fall over.
Has a big pocket for a hydration pack but when I use my 3ltr osprey resevoir and have a full pack it pushes through the mesh back and digs into my back (maybe too much pressure in the bag)
So yeah I'd say it's the best bag I've had, I paid just over £100 for it and was a bit worried about paying that much for a rucksack but it's worth it, the only downfall is the fact that it has a frame so you have to be careful how you pack it, if it's an issue I'd get a Lowe Alpine bag.