This is an extremely loaded question, and one that is virtually impossible to answer. While I like just about any newer homes in virtually any community around the perimeter of Las Vegas, my answer really has more to do with you than the neighborhood you select. I raised 5 children in Las Vegas, so I feel well positioned to respond to this question.
Years ago Hillary Clinton wrote a book about how it takes a village to raise a child. Really you need to find a neighborhood that has people who can help you raise your new Family. That means schools where parents are involved with the education of their children, a church you feel comfortable with that will embrace your family as their own. This goes against the crowd a bit, but I have found and believe that if you have extended Family in Town, living closer rather than farther is better. While it important for any extended Family to respect the need for your family to have their space, time will support my premise that having them near by is priceless in terms of it value to you in the long run.
If no extended Family is nearby, take a few weeks to visit a few church congregations until you find one that you feel at home with. If you are not a church goer, drive communities and see where you feel a sense of home.
Obviously price is a consideration, especially for a new family. So, that is going to influence where you end up. Now, I may get a bit of grief for the following (please do not construe this in any way as steering), but I like anything west of I15 and North of Ann Road for future value and overall services development. I look at any purchase of a home from the standpoint that someday I want to sell, so I need an exit strategy. It is a fact that the most affordable newer homes are found in the far north, and I believe that we will also see the greatest amount of appreciation in those areas well.
If I can help, please feel free to contact me.
Best of luck and thanks for reading.