In reply to woodsy:
I replaced my useless Berghaus airflow thing with a Lowe Alpine 'Crag Attack 40', and it's been fantastic. One big compartment, pocket on the lid, minimal pointless padding, e.g. on the waiststraps. Minimal crap on the outside, apart from compression straps (which work) and axe holder thingmies, although it does have two pretty pointless gear loops on it. It's light as well, but not to the point that a sharp bit of schist will ruin it. It's also cheaper than most offerings from Osprey/Berghaus. It doesn't ride too high either, so it'll be out of the way of your head.
I've had it for a while now, and it's my 'go to' rucksack. I've used it for short breaks in Paris, looooong days doing Munros, cragging, going to the indoor wall on my bike etc: I'd rate it a solid 8/10.