CSULB vs. CSUN?

Although CSULB is farther from home and I would be faced with the inconvenience of not being able to bring a car my first year, I want to graduate on time so which school is less crowded?? I will be happy at either school but again I want to graduate in 4 years and I want to have as few roommates as possible if not none so where would it be easier to find housing and classes??

After visiting both schools, I came away with these two being my least favorite. YMMBD.