I read Getting to Maybe as a 1L and thought that it was very helpful. I actually went back and skimmed through it this semester before exams. It helped me get my head away from the nitty gritty course details and allowed me to re-focus on exam writing techniques. Its got some good examples in it.
I didnt do LEEWS, but I've yet to hear of anyone who did it say that it was a waste of time.
I wouldn't say it's a total waste of time, but I don't really get the raves either. To me, it seemed to have more limited applicability than it claims to. It's good for hypos, especially in certain subjects, like Torts. But my exams tended to have a lot of policy questions. And Contracts had tons of short answer questions, like multiple choice or true false where you had to explain your answer.
I do think LEEWS helped me systemically spot issues on hypos. And I'm glad I listened to it/read it. But I don't think it's miraculous, and I don't feel I got more from the audio course than I would have gotten just from the primer. And the friends I lent it to feel roughly the same way.