Sarah Brightman is one of my fav female singers of all time, next to Laura Brannigan that is, but they again they are of different classes of singers to start with, so there really is no comperason to be had between the two of them.
At any rate, I have been a fan of Sarah Brightmans ever since I saw her in person at a concert, and loved her in Phantom of the Opera (saw her twice in that role). Sighs, there is just something about her voice that is hard to not listen to, as in it just catches me.