@victorm
I only used ninja. My strategy i would not recommend to most people.
I downloaded the audio and listened it one time over for each section with the notes open to follow along visually and with audio. After that, I just did multiple choice for each section, and thats it. I've never opened one practice SIM or did one practice or mock exam or whatever.
For REG, I studied 70 hours total and got a 80 first try.
Next quarter, I studied for FAR BEC and AUD. I studied 100 hours for FAR only multiple choice and got a 74, i did the same for BEC for 50 hours and got a 74 and AUD i studied 7 days for about 20 hours and got a 72. Basically I failed all 3.
Then this quarter was busy season, and my strategy is to take each test every quarter no matter what, even if I barely studied, just to get a try in.
I studied another 60 hours of multiple choice for FAR and ended up getting an 82. And studied BEC for 50 more hours and got a 79. I only studied AUD for 5 days and got a 76. However, i'm a senior auditor, so perhaps thats why I was able to get away with it.
So TLDR: Only Ninja multiple choice, passed all 4 exams in 6 months.