What are the best neighborhoods in Raleigh, North Carolina?

My wife and I are considering moving to Raleigh, NC. She is being offered a great job. We are young (under 30) with a 2 year-old son. Property value, schools, taxes, and crime are the most important factors we are considering.
Update: We were told by her employer to look toward the southwest area (Cary or Carey - I can't recall the spelling?) area, but I am exploring all regions.
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