I don't live in the Santa Clarita Valley, but I have family there and I inspect homes in Valencia, Canyon Country, Newhall, Saugus, etc.
I like the way residential and business areas are planned. It's not chopped up like parts of the San Fernando Valley. Seems clean and the people there take care of their homes. Nice place to raise a family. Very affordable.
The down side is commuting to Los Angeles. The 5 freeway is a bottle-neck several hours a day.