Well, good question. I think you are going to get alot of different answers because it is really subjective to the learning style of the individual. That being said, here is my .02:
BEC: Didn't use a cram.
FAR: I used the Yaeger cram–this was great. I thought Cindy was great at explaining all the nuances. Plus the notes she wrote were fabulous.
REG: I used the Yaeger cram and didn't like it at all. Phil is all over the place, hard to follow him. I got the Roger cram in my last week and loved it. I wish I had done it sooner. He is really detailed, and does much more than review. And , his study book is written well.
AUD: I am using the Roger cram. I would say he is the Audit guy. He worked at Deloitte in Audit, so he is totally on point, and usually throws in what is really a current practice versus what we are tested on. He is engaging and keeps me awake. He explains everything inside and out. Again, the book that you receive, has great notes in it.
I did purchase the final review from Becker for FAR and BEC and didn't really like it. Not sure why, I guess I need more than “take your highlighter”, etc. Overall, I think if I had been smart and reviewed all the choices out there instead of just taking what my firm paid for (Becker), I wish I had started with Roger from the get go. For me, I need that enthusiasm. Some people might be put off by his energy level, but it was perfect for me.
All in all, check out the websites and try to view a sample of the different crams to see what you like. Or go to youtube and see if you can spy one there.
Best of luck to you!