In reply to Chris Harris:
The Blue Ice 38 was for sale at SportPursuit for 40 quid last week - perhaps no surprise they have sold out already!
Trouble with SP is that you have to sign up and read their emails to know what is on offer. And the emails come in daily, so that's another email to clog up the inbox.
Anyone who wants to sign up feel free to do so via my referral link
disclosure if you buy something I get a 5 quid referrers fee...
http://www.sportpursuit.com/join/Ben_Brockway_75946
In reply to the OP: Expensive again, but the Cactus Climbing Miklat would fit the bill:
http://www.cactusoutdoor.co.nz/packs-bags/miklat.html
Bear in mind that proper NZ packs are made of canvas and last forever, but weigh more (1kg for the Miklat, which is not excessive given the thing is named after a bombshelter).
More locally, POD Cragsac is heavier (1.5kg) but durable and solid. There's also a Macpac Weka 30, which is half the weight of the other macpac one...
Cheers
b