Chula Vista is a very nice community. The portions east of the 805 are newer and very popular so that may fit your modern requirement..
As with any purchase it is important to research the exact neighborhood that you are considering. I recommend that all of my clients use a couple of websites to check crime and sex offenders.
http://mapping.arjis.org Will provide you with crime information
http://meganslaw.ca.gov Provides information about sex offenders
If I can be of any help please contact me.
Also my websites have great search capabilities, are free to use and updated daily.
The San Diego Property Shop
CA DRE #00648687
Raul J. Vasquez
122 Civic Center Drive
Vista, CA 92084
Ranch to name a few. They are all great neighborhoods to raise a family in. Chula Vista has a lot of amenities to offer it's residents and the school system is great as well.
Lots going on in Chula Vista as they celebrate their Centennial this year. You can learn more about the community by going to the following links:
Gina Garcia, Realtor
Windermere Real Estate SoCal