If you are looking for a briefcase that will last you the rest of your life you have to check out the Hartmann leather expandable Zipper Briefcase.
It is pricey at $475, but it is made out of the smoothest leather you will ever feel. I am talking leather so smooth it puts Coach to shame. Seriously!
I got this briefcase in the espresso color, which is a very dark rich brown. The briefcase is very spacious. I can easily fit my laptop in the briefcase along with several different file folders. I have everything at my fingertips when I am making presentations, which I like!
It has a shoulder strap for added comfort when this bag is filled to capacity. As the name states there is also the expandable zipper. The briefcase expands 1.5 inches for added storage space. My hisband actually took this briefcase on a business trip to Florida with him and packed his clothes in the expandable zipper section.
This briefcase might cost a little more then you are thinking of spending, but after having a lot of different cheaper briefcases over the year I am happy to report this briefcase is solid if the last year and a half of daily use have shown me anything it will be with me for decades to come!