There is no right answer, but Rutgers is 25k per year while Seton Hall is 46K per year, which means over three years you will pay 63k more to attend Seton Hall than Rutgers assuming you have in-state residency.
You should also visit both schools and walk around the campus, talk to professors, students, admins, etc and see what school feels right for you.
Also remember that at either school you will learn the same exact thing. At any ABA school you will learn the basics of the law and Rutgers, Seton Hall, or any ABA law school will provide you with a quality legal education.
If I was you, which I am not I would favor Rutgers since I do typically don't think paying $63,000 more for more or less the same thing is a good idea, but to each their own.
Good luck on your pursuit of a legal education.