Dumb questions, which Victorinox has better durability the classic, (red, or alox), & recruit, or cadet? Also when were the non military model(s?) developed? I would like to get myself 1, but can't decide between these 4 models. If I got the recruit, or cadet it would go in my purse, BUT I see you carry the classic, which is just too cute, on your keychain which would be nice.