I wouldn't go for Arista either. Carrie is promoted well cause she's Country, and they get mad cash. And that's Arista Nashville, so basically a different label. I just looked at their list of artists and they all are either nobodies or flops. Even Whitney Houston.
RCA is Avril Lavigne, and they kind of suck too. Dropped out on Xtina after "ANOM", "Hurt" arguably. Avril they dropped out after "Girlfriend". Saw what they did to Kelly.
Her best bet is JIVE. Britney, Ciara, Jordin, David A., Justin, the list goes on of their successful artists and that they actually work on.