Stay away from Riverside and San Bernardino counties. The cops are dicks and just about every city has some type of medical co-op ban. It's also getting worse and worse with more violence from gangs. Used to be not so bad, just a little boring, but now it's getting just as bad as LA. It's also probably the most affordable area in So Cal, but I guess you get what you pay for.

I'm not sure about the desert cities though, (Indio, Palm Springs, etc.) That whole area is sort of like it's own part of cali. There are a few co-ops, but it's still Riverside county so the authorities aren't pro-medical marijuana. I can only guess the San Fernando Valley is most lenient with regards to medical marijuana, seems to be a co-op fair ground out there.

Where are you coming from if you don't mind me asking?