I have lived in Heath since 1990. It is a great place to raise a family. Our High School is now rated a 5A school and this has happened over the last 12 years. Every year we have a 4th of July party, which is quite fun. During the Holidays there is caroling and the lighting of Tree. Heath is a small town with many advantages and good christian principals.
Looking back on my own choices years and years ago, I think I would pick Heath (75032).
It has changed over the years, but the people are still nice. It is a cut above a lot of places. You can research prices and other information around an address at http://www.DallasHomeValueReport.info
The Harbor is right on the water in Rockwall (75032) and features shopping, restaurants, movies and other fun things to do.
Demographics for the area do support the idea of 75032 being a good place to raise a family.