I'd say that if you want good female vocals check into the regular trance side of the spectrum. Any comps before 2004 from the likes of Tiesto, Armin Van Buuren, Ferry Corsten, Rank 1, Above & Beyond, Mike Koglin, Matt Darey, & Markus Shultz should have very uplifting, and beutiful euphoric female vocals. That's why I'll always love the older trance, it's timeless.