So after extensive research on small bags, with an emphasis on climbing, I finally broke down and ordered this fancy little pack from Patagonia.
I really wanted a SIMPLE pack, my other bags have a pocket for everything under the sun, which ultimately weighs a lot and makes it difficult to pack a bag correctly. This bag proves to be the cure for my encumbering issues.
It is literally a sack, with a small pocket on the cover, two shoulder straps, and an optional waist strap.
For a 25L sack you can stuff a LOT in here; were talking full set of cams/nuts, 'biners, slings, several water bottles, some snacks, small medkit, an emergency rainshell, and get this... a climbing helmet to top it off!
By moving the center vertical strap that cinches it all down, up to the top loop, you can even throw a rope on and secure it. Unfortunately, I tend to over pack bags and always forget my climbing shoes... BOOM external daisy-chains, four of them running vertical along the sack.
I love this thing, I use it for everything; climbing, traveling, biking, hiking, even for school...
My only gripe is that i wish the daisy-chains and shoulder straps "felt" a little more durable, I trust the stitching entirely (I actually took it on a Multi-pitch route over the weekend to test it out.), I just wish I could physically see that it is stitched enough to withstand a bear attack...