I’m pretty set on buying a place in Playas (the beach area of Tijuana) in the next two years – probably in Puesta del Sol. I don’t spend enough time in San Diego to justify paying California taxes anymore, but I’ll keep my condos here.
If I didn’t need to have a secondary home base close to the border (San Diego – for ease of travel/work issues), I’d seriously consider living in La Paz (Baja Sur). Very safe, great weather and beaches, decent-size city and very inexpensive.