I own a small Filson dufflebag I think the model # is 220. It has been great for me, very rugged, made in the states, and I think it has a lifetime guarantee. So impressed by it I think that I am going to buy a suitcase from them.
I'm a big fan of onebag.com, and if I were to spend a decent amount of money on a bag, it would be one of the recommended bags from that site, like an MEI Voyageur or MEI Executive Overniter. (meipacks.com)