You guys crack me up so much. Have you heard Vanessa's cd? Stop basing on her based on her first single. Vanessa's ballads are icing on a cake. You guys are just hating on her so you pick Lindsay Lohan instead. Lindsay can't sing that well.
JoJo has had no career or connections with Disney.
If wer're going with the best vocal ability, it would be Vanessa with Lindsay at a very close second. Popularity wise of course it's Lindsay and the most money to show for their work would be Hilary.