I'm riding a Selle Italia Turbo on one bike, and a generic piece of crap with a cut-out on the other. The cut-out is really nice for riding in jeans/other normal pants, but with cycling shorts the Turbo is pretty good for me.

Not perfect though, so I'll probably look into something else (a Brooks, most likely) in the near future. I'll let you know if I discover anything amazing/useful.

Like ryand said, though, saddle fit is really a matter of personal preference. If she can try out a few that's probably going to be infinitely more helpful than a million folks on the internet talking about what they like.