As far as rappers from Modesto are concerned I also liked that debut from BG Evil and his click being featured - Evil Poetry.
Big Chill - his style is great, it reminds me of 90's mob shit. I'm still waiting for him to drop a real album, I can't stand listening to mp3s. I gave a Valleyfornia a listen and was really pleased with that.
Apart from that I'm diggin Twamp Nina and Unknown formerly of Darkroom Familia and NCP.