Anyone have experience remodeling a shower?

Greetings all, this is my first shower remodel and I have it all torn down to the studs. I've gotten mixed responses/search results from my basic questions.

I'm going to be using synthetic/engineered marble slabs for the shower walls.

Remember this is for shower walls, not tile floors:

I've decided to use durock under the slabs...

studs/vapor barrier/durock/slabs OR studs/durock/thinset over seams/slabs

Those are the main questions I have at this time, I'll add as I think of them

Thanks!