Hi, I recently bought a 15.4 MacBook Pro and am looking for a smart briefcase for my machine. I travel on work frequently and most of my trips are overnight. I would ideally like something that can be expanded, if necessary, to accommodate a pair of clothes. Also, I want to spend minimum time at airport security and want my briefcase to be TSA checkpoint friendly guidelines compliant. Needless to say, it should have lots of pockets to organize my files, power cord, USB drive, business cards, headphones, etc. Does anyone know of a good quality luggage manufacturer that makes such expandable briefs? I dont mind spending money for a high quality product and a customer service to match.