I would physically visit the schools in both areas. Look at homes in both areas to make sure the home size fits your needs with your budget. Speak with neighbors in each community to get feedback. Study the crime statics in each area. I personnally like Saugus over Simi Valley. To me, Simi Valley is very congested whereas Saugus has plenty of room for growth and development. A huge development is in the works to develop the area west of Magic Mountain. I think it speaks volumns when developers and the city want to pour money into their community during these economical times.
I've lived in the Santa Clarita Valley for eight years now and absolutely love it!
Good Luck! If I can be of further assistance, call me at (661) 255-3335.
Cheryl Garner, Mortgage Expert
Fairview Mortgage Capital, Inc.
CA DRE-01262285 NMLS-295929