its very dependent upon your teaching. i know that sounds like a terrible and vague answer, but you should get used to that in law school.
i personally tried Gilberts and Examples and Explanations. The gilberts was okay, but contained way too much material that wasn't covered by my class. i ended up using it very little. however, i knew many students who only used that and did fine too.
my personal recommendation is the examples and explanations series, if it meshes with your profs style. i found it extremely helpful in more technical classes, like contracts and property, and less helpful in more "subjective" classes such as torts and con law.