We’ve owned investment real estate in the San Diego area for almost 25 years–mostly in the coastal areas.
It seems like everyone wants to get in the game now, so there is a lot of competition for investment properties.
At this point in time, your investment options will be limited to areas within your budget, and it sounds like you’ve received some good suggestions from previous posts here.
You may also want to take a look at various zip codes at sdlookup.com, to get an idea of what’s out there, or work with a realtor who might be able to further assist you.