As it says want one or the other. Preferably an ohm or 2.0 or would like to stay with the 50L Jam. Would consider a circuit. Would consider quite a bit in the ultra light packs just don't want to go new because I've never tried a pack of these types. I've only owned osprey so far. Want to see what if anything I am missing. Also have quite a few TQ and UQ would consider trading.