As a CA Real Estate Broker, I like Realtor.com, Yahoo and MSN. If a property goes Pending, it comes off Realtors.com, thus its generally good data. Most of the real estate companies such as RE/MAX, Prudential all feed to Realtor.com.
In Realtor.com, you can choose by city, zip code and even MLS's numbers.
In addition most MLS systems always feed to Realtor.com | 
Real Estate Website? 
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