What we do know is that law schools such as Harvard and Yale have typically populated approximately 50% of their classes with students from 11 schools (Ivies, Duke, Stanford and Chicago). We also know 50% of those populating these super elite law schools are kids from schools other than the aforementioned elite 11.
Consequently, OP I think either of your choices will give you a comparable opportunity to successfully apply and attend per your OP.
Great choice- my DD is about to graduate and has loved her experience in the humanities at Brandeis, as much as the campus and community. If you like writing, I would strongly recommend trying out a few CrWriting courses- the professors are exceptional!
I am so glad to hear that you chose Brandeis. Like I mentioned above, my daughter has been so happy there and is so sad that her first year is over already! Lots of good luck!