i've heard about the 3n1 being a great bag, but most have mentioned if fully loaded, the backpack strap tends to be spongy/ bungy type of feel.
i went to a local cam shop today and they said the point of that design was to not let the bag feel that heavy when walking. (not sure if that's logical or not).
anyways, i'm looking into the KATA 3n1 - 25PL which the size is matching to what i'm looking for without looking like i'm a ninja turtle on my back.
so if you current own or have previous own one, please let me know your experience and opinion.