Can't tell you anything about Athena, I have not seen her. There are reviews in here somewhere, from at least a couple of reputable posters. Search for them.
Mya - I'd steer clear. I saw her once last summer, and never again. I believe that at least one other poster has agreed. Again, do a search. You may need to put a couple of ** behind her name, as I think the search only picks up on five characters.
Lots of other good experiences available at Classy. I'd reccommend Terran or Gillian from recent experiences. I'd have to think back on other encounters.