So true WolfsBane.The retail stores think that they can put a strap on a bag and call it a "messenger" bag and people will buy them. Unfortunately they've been proven right. The sternum strap is key, as is good padding on the shoulder strap

And I'll agree, once I got my Chrome bag adjusted the way I liked, almost can't tell it's there. Carrying the same load in a backpack there was never any doubt.