Looking at getting a cargo box for doing road trips with the family mostly, mounting on a Jetta Wagon, and possibly for an emergency situation as well. Anybody have any experience with Yakima or Thule cargo boxes? Anybody use both and have an opinion to which is superior in terms of build & quality? Pros, cons, things to be aware of?

This thread could also be of interest in a SHTF situation type of thing where people are interested in expanding their cargo capacity for getting out of Dodge situation. Nothing like doubling your cargo capacity and not reducing your MPG too bad.