Replying to Touring/backcountry backpacks

had a quick look, couldnt find much in NS about the topic (i may stand to be corrected, link me up if you find a thread please)

Just recently got set up with some chets and marker barons, need a new backpack since i lost mine last time i was on the piss....still shitty about it...

im in europe atm and need a backpack that is at least 25L, less than or equal to 35L, and can easily be used as a simple backpack for on-piste as well (so not too bulky and cumbersome). I have chets so i need something that is at least 134mm, but probably wouldnt be interested in something with 135mm as it would be tight a fit.

ive been to some shops here, the mammut nirvana pro 35 seems pretty good
(http://www.mammut-shop.de/likecms.php?site=index.html&dir=&nav=639&prod=8292&sea=57&st=ma)

or the deuter freeride pro 30L
(http://www.sport-schuster.de/Ausruestung/Rucksaecke-Taschen/Deuter-Freerider-Pro-30.html)

I bought my brother a dakine heli pro deluxe a while ago, but its volume is too small for me, im looking for something a could still do an overnighter with if i stayed in a hut...

cheers in advance for any replies or advice!