Have you tried the Real Estate Guide section of Trulia? I would love to hear your feedback. No, I do not work for Trulia.
Recent buyers have told me they like to combine use their favorite Realtor's websites, along w/ Realtor.com (most lisitngs), Trulia (helpful w/ detailed data, but less listings) and Zillow (the mapping features). Beware of Zillow's valuations as they are not accurate. Buyers tell me they like Zillow for mapping.
You can sign up for automatic email updates through a local Realtor. I do not service your area, but if you reach out to one of the Pros here on this thread, they can probably set it up for you. This provides you an automatic notification any time a new property comes on the market that matches your criteria.