Welcome to the forum.. I don't think any of the cases are compatible... I'm not 100% sure though.
The Qmadix case works perfectly. Specifically, the "Metalix Snap-On Cover." It adds no depth at all to the top of the phone.
...BTW, there is a plastic spacer in them both that you have to remove for the thicker Maxx to fit. With no case, you run the Maxx spacer. With a case, you run no spacer at all.