92115. Great area, still affordable, central to everything and prices are rising.
Buy a condo in UTC near the mall. You can Airbnb it OR rent it to college students (UCSD) or professionals that want a reverse commute up the 5 / 805 and East in the 56. The mall renovations will be complete soon. It's growing by 50% and has one of the few Amazon book stores.
Are you willing to do the extra work to AirBnB? If so, pacific beach. A nice place can pay its own mortgage is you're aggressive about it.
Poway!