@Matt R. I live in L.A. and I agree, it is very difficult to find a positive cash flowing property. I've been investing since 2009 and I tell my friends, if its your first property its not the right time to buy in the Los Angeles market. Right now things are trading at negative leverage( 3.5% caps). If you are a brand new investor, you might not be correctly positioned to purchase a property that bleeds you a little every month while you are waiting for rents to go up. Its a play for a more advanced real estate investor or a really high earning individual that also picks up depreciation benefits.
Although my first 4 investments have been in So-Cal. For the next year, I am focusing on out of state properties. Unless you are in the business of stabilizing under performing assets I don't see the short term even mid-term benefits of a new investor shopping in So-Cal.
Edit: The other thing about buying in So-Cal right now is you are competing against of a lot of experienced players with deep pockets. Every offer I have put in in the last few months in California has an all cash offer. Even then, I have been beaten by other offers above asking with no contingencies. So I would really be careful as a newbie real estate investor in California. You're really swimming with sharks.