system
A chat on subreddit /r/wallstreetbets
human
PassPerfect. It's worth the money. I used it for the 63, 7, and 24. Currently using it for the  65 and haven't failed an exam yet. You get what you put into it though, so dont think just by purchasing it you'll pass. 
  
 [Edit] formatting.

gpt
I used pass perfect for 7, 63, and 24 too and thought it was great. Then used them for the 27 and it was completely different, the practice questions were nothing like the actual exam. I still passed but was definitely nervous at the end.