It's my name! I can confidently say that in 30 years nobody has ever called me Sue, that's more a name from my mum's generation and I don't think it would occur to most people!
I've always liked having a z in my name, and having 7 letters so I could use rainbow colours, but it did feel a bit dated to me. I think I was just too close to its heyday being born in the 80s and actually now it's far enough removed that her peers would take it for what it is, if you see what I mean.
I think if you like it, go for it!