I have a North Ridge Ballistic 35l pack and have been using it for the past few months and its been really good.
It's exactly what I was looking for, slim and cut down with nothing but what I needed. I still had too do a bit of chopping and changing but now its just about perfect. Its basically a rip off of the Crux AK Range but alot cheaper.
I took off the ice axe loops and walking pole holders, which were pretty un-necessary as I stash them on the side anyway. Lost alot of the extra material on the chest and waist belt straps which were too fidgety with loads of extra tat hanging off. Compression straps are simple. Hip belt is removable and the back supports can be taken out aswell. Has a rope strap unde the hood for any scramblers etc and two lid pockets (inner and outer) Comes with bungee cord for lashing too the front which allows you too stash your waterproofs, sleeping mat or crampons.
Back system is just slit foam but its pretty good for such a simple design. I tend not too suffer from a sweaty back too much anyway and its not been a problem for me so far.
Only problem is the lack of pockets on the side which means you have too stow your poles carefully because the could fall out of the straps. Only a minor niggle which can be solved by properly attaching your poles or stashing them under the lid.
Overall its not too big for day trips and has just enough room for an over night bivvy.
Well worth taking a look at if light and fast is the way you want too go
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