What colors are they?? I'm kinda partial to the stam b/c I think it's just such a great bag. But I've recently been eyeing the lou for the exact same reason - light(er) weight and can be carried on the shoulder....
it might be heavier than the lou, but you have the stam is such a unique and beautiful color(i'm sure it's breathtaking because mj does such a fabulous job with blues), and you shouldn't let it go! besides, i carry my stam on your shoulder using the chain strap and i can hardly notice it. it really isn't as heavy when carried that way.