Briefcase/bag May 10, 12, 10:12 a.m.

Can anyone recommend a well-made and well-designed briefcase? I love Porter bags, but don't want to pay $500. Somewhere in the $300 or less range would be ideal. I want something I can use for decades. So I guess that means leather or canvas would be best.

I need enough room for a 15" MBP, iPad, notebooks, etc. Shoulder strap preferred.