Bokerbear –
I don't have experience with Ninja MCQ.
Like your friend, I have used Becker + WTB for all 4 of my exams and passed.
I took FAR first, and supplemented with WTB. This was before CPAExcel bought Wiley, and before Ninja MCQ was available.
Because of my success with FAR, I decided to stay with WTB even after the CPAExcel buyout, and even after Ninja MCQ was released.
For each of the additional exams, I seriously, seriously considered buying Ninja instead of Wiley because of the good reviews and good price.
But, each time, I decided I didn't want to change my formula, since I kept passing each exam with the same test bank combination.
My concern with Becker + Ninja –
Becker questions are generally harder than Wiley. So, using them together gives you a good combination of “deeper, involved/complex” questions of Becker, with more “surface-level” questions from Wiley.
Ninja's reputation is that the questions are hard – which is great preparation, but using it with Becker which is already made of the harder questions sounds like it would be more time-consuming because you'll have to spend time understanding even more hard questions.
I got really concerned about having the time to practice and learn so much at the harder level, since Becker is already time consuming, too.
Overall, the real exam questions, IMO, are somewhere between Becker and Wiley regarding level of difficulty and complexity. Often, they lean more towards Wiley level of complexity, but Wiley on it's own, I don't believe would be a good-enough preparation.
So, that's my 2 cents. I realize it's a touch decision because I struggled with the same decision for my last 3 exams.
With that said, I had already decided that if I didn't pass REG (my last exam taken last month), I was going to add Ninja MCQ to my studies to prepare for taking it the second time. But, thankfully, I passed.
P.S. If you decide to buy WTB, buy it from Amazon. It's cheaper than directly from Wiley.
FAR - 86 - 2/27/14
AUD - 75 - 5/29/14
BEC - 80 - 8/31/14
REG - 89 - 2/27/15
Praise Jesus! I'm done!!
Study resources:
Becker
Wiley test bank