General ACCAP4 or P5

I have the same question as well. My guess is AFM (P4) is more useful in practice as APM is more for production industries and is quite specialised, whereas AFM can, in theory, be used for almost any industry and, I believe, is especially useful in banking. However, judging by the equivalent Foundation units, I performed MUCH better in F5 than in F9. So its a case of doing the "easier" but perhaps less useful P5 or the more difficult but more useful P4. What was your other option? I'm guessing you did P6.