Depends what your criteria is for "most desireable". Are you planning to buy and rent it out? Are you planning to downsize and want a place to live in? San Ramon is going to be less expensive than Danville.
Places like Reflections and Copper Ridge usually have stairs in the upper units which deters buyers who are seeking retirement downsizing residences. Those developements are also CONDO CONVERSIONS. What are the rents for developments looking like? Is there pending litigation at the development.
You also need to look and see what is going on with the properties...are there many in foreclosure? Is the resale going to be a problem for buyers wanting financing. (lenders have guidelines).
So basically you need to address what YOUR criteria is when purchasing a property. More importantly work with an agent who knows the market and is experenced.
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