Wow that's a broad question. Many people have different opinions on what constitutes THE best place.
My favorite place is my hometown neighborhood of Rossmoor which is on the border of Seal Beach. We have the best of it all here, 5min. to the ocean, larger lot sizes than the actual beach neighborhood, great mixture of homes from 1500sqft to over 5,000sqft, lots of mature trees, close to freeway access to get to South OC or up to L.A.. It's a highly sought after neighborhood with excellent schools.
For you, it depends on your price range and how close to the beach you'd like to be or how far of a commute from work you can handle.
Let me know if you'd like some more insight or help finding YOUR best place!