My company paid for Becker, so I've been going through that completely. Don't bother with the videos unless you find you learn well that way. When I got stuck on FAR, I found that the Ninja MCQs filled in a lot of areas that Becker didn't. Becker was great but for my third attempt, I started using Ninja MCQ and I really think it gave me the extra that I needed to pass FAR. I'm in the middle of studying for AUD and there are *a lot* of repetitive questions but so far that seems to be more related to AUD than either of the review courses. I do think supplementing Becker with Ninja is the way to go. I've found Becker has the hardest questions, Ninja is easier, and the real thing is even easier (with of course some tough curveballs). I'm sorry I can't speak directly to REG though as I didn't use Ninja for it.
What I can say about REG is that you do not need to know the exact income tax brackets. I can't remember coming across that on the tests, maybe only a couple of times on the practice questions. What you DO need to know are the various phaseouts. The Mom and Pop rental exception and where that phases out, charitable contribution limits for corps and individuals, start up cost treatment, etc. They're not particularly complex and can be memorized fairly easily and I would suggest knowing them.
For REG, there are a lot of rules and exceptions, so I concentrated on knowing rules and drilling MCQ. I went through all the sims once to get a feel, but barely touched them after that. On test day I really went through the sims on memory of rules and applying what I knew to the situation, rather than trying to learn all the sims in Becker and recalling. I also got some ludicrous sims on test day, about derivatives, AAA, and JEs for futures contracts. Things that did not come up in the Becker sims at all. I went back and checked after the test and there weren't any sims remotely close to what I saw, so more Becker sims wouldn't have helped me. I passed on that one with the wacky sims, so either knowing rules and my way around JEs got it done or everyone else screwed them up too.
Edit – ALSO! Don't gloss over Gov't and non-profits. I failed the first time probably because I ignored non-profit completely and a lot of those showed up. The 2nd time, not many non-profit but tons of Gov'ts. GRASPP SE PAPI, know that acronym for Gov't.
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