I'm using standard Blu-Ray cases. I sort of cannibalized my own collection for them. It seems to me that you are having printing problems of some kind, maybe? Relative to the image, is there any of it missing? The cover should occupy all of the clear plastic real estate. If it isn't, it's probably a printing issue.
I'm going to investigate those cases. On that note, have you ever visited this site?
http://www.genesysdtp.com/index.htm?10dvddetails.htm
Very useful.