I'm looking for a good quality, DURABLE, waxed canvas/leather portfolio (top zip, twin handle, suitable for the non-laptop user) briefcase. I know about the big 4 that are quoted here a lot, but what about others? BIG 4 Duluth Trading Co (Firehose Bootstrapper Briefcase) Filson (70256, 256, 70257) Duluth Pack (Freelance Portfolio) Frost River (Correspondent Briefcase, Single Briefcase) OTHERS Barbour (Waxed Leather Briefcase) Orvis (Battenkill Briefcase) Korchmar (F3005 Bomber Brief) Earnest Alexander (Watson) ????