Probably the biggest complaint I hear from potential La Habrians is the limited Freeway access. The 57 is probably closest on the east side of La Habra and the 91 and 5 to the south and west. Pretty much though wherever you are in La Habra, you're going to be 10-15 minutes minimum from the closest freeway.
Still a great city, just something to consider.
I believe La Habra is a great city, as are many in Orange County, and has lots to offer. Check out http://www.greatschools.net to learn more about schools from an independent source. I am located farther South and don't really know the city well enough to advise you on the areas within the city but I know a great Realtor to refer you to. Let me know if you would like his name and contact information and I will get it to you.
Good luck with your search,
Brian Wilson, Realtor