The only two radio stations I always listen to are WILD 94.9 and 106.1 KMEL. The main difference between the two, I've noticed, is that 94.9 also caters to the Bay's Hispanic community with spanish songs and some reggaeton. As far as I know, KMEL doesn't have reggaeton.
I think on a professional level, KMEL is better at what they do. I love the music that they play, and the shows that they have on sunday nights. I also love to listen to chuy and faye(?) in the mornings.