I have both Z3200 and iPF8300
I don't really like the Z3200 due to the limitation of paper choice, most of the very thick paper won't be able to print without head strikes. Also the speed is very slow. So I use my 8300 for almost all of my clients.
But when it comes to matte paper that could feed into the Z3200 correctly, I will use it, specially for B&W images.
But still, 8300 can do everything that I need to and my clients want to.
aaron