I chose the ABS freeride 15 litre. Bought it last year, it's light and fits well, but don't expect to pack a ton of stuff. There's room for some survival gear, spare gloves and goggles, and exterior places for shovel and probe, and that's about it. Also chose ABS for their reputation of saves and my local dealer will exchange the cannisters for $35.00 which they always stock. Also bought a spare cannister to leave in the pu, incase an accidental deployment happens I'm good for the next days ride.