omigod! I laughed out loud when I clicked on the z-case link and was sent to Zero Halliburton! I admit I am not familiar with their bass cases, but their attache cases were the drug dealer case of choice back in the 70's and 80's! I'm sure most will remember from some movie or TV show the image of the big time drug dealer walking through the airport with an aluminum attache case - that's Zero Halliburton. (I don't know if there is any connection with the Halliburton Corp. and co-president Dick Cheney).
I have a large size Zero Halliburton attache case that was used in an experiment by the lawyer I worked for when I first got out of law school. He had a case where a plane crashed in a lagoon and shortly thereafter the locals found bags of quaaludes washing up on the beach. There was a Zero Halliburton case found in the water and the question arose as to the effect of the water on the case and potential fingerprints.
The guy I worked for bought a similar case, put some rocks and stuff in it, and placed it underwater in the lagoon for several months. When the legal case was over, he gave it to me, a little scratched on the outside, but otherwise no worse for the wear. It was watertight and undamaged.
I still use it today for my P.A. cables and other band-related stuff. If their bass cases are built anything like their brief cases, they are very solid.
Bill, tgo