I'm now on my third blowfish due to a couple of incidents with crashes and rocks, but that's more like user error... Otherwise they last pretty well. Each time the design gets a little better, and this one rocks.Good things: Supes comfy. Simple look. Fits more than you'd think if you're clever. More than one "right on top" spot for handy gear (camera, lip balm, etc).Not so good things: No dedicated space for the bladder - I often have to unpack stuff to get the bladder back in (sorry, but Osprey do this way better - I also have a Manta for UL overnighters when I have to refill). Can't really strap a jacket to the outside to max out capacity.