I think Kelly has a top-tier voice, but I think Tamyra might win. The market is ripe for either of them, they'll both get signed. There may be an advantage to being first runner up. The contract for the winner is very restrictive, but the first runner up can argue her own terms with whichever record company she pleases.
Nikki reminds me of Pink, both Christina and Ryan Starr would be better off modeling, and I think RJ could have a big future in Christian Music.