Best Female Rock Vocalist

Interesting so many think it is slam dunk for Ann Wilson who I'd put top5 but not at the top. First name i think of and the one I'd go with is Stevie Nicks. Not sure i've even seen her mentioned in the thread.
I was surprised to see an almost anonymous [sic] Ann Wilson vote also. I love her, don't get me wrong, but had it been more Stevie Nicks answers, I wouldn't have been as surprised. Side discussion, which one still has the pipes? I know my girl Pat has lost some range, sorry to say.