I always advise my clients to call the local police department and ask them about crime the area they want to live.
I have always found them to be helpful and knowledgeable which will put your mind at ease.
there are also crime maps for cities which show crime rates.
Do a little googling and see what you find.
Keller williams Newport Estates
Depends on your budget. Anaheim Hills, or West Anaheim / Anaheim Shores are probably the best - however the city as a whole is pretty safe except for the northeast corner ( why is it that all cities seem to have an "eastside" ...areas which are the worst? LOL ). I particularly like the Southeast area too, near UCI Irvine medical center and the City Drive.