As a native, who has also lived many other places, I think you may have to give and take a bit with your requirements in the San Diego area–especially at this point in time–and in the price range you mentioned.
That said, we’ve lived and raised our kids in Carmel Valley, and for the past many years, in Rancho Santa Fe. The kids loved both areas and turned out great, so you might give those locations some consideration, as well as Del Mar, as others have mentioned.
In addition, check out sdlookup.com, and run searches by zip code in Del Mar (92014), Rancho Santa Fe (92067), and Carmel Valley (92130). That way, you’ll see exactly what’s available in the price range you mentioned.