https://www.youtube.com/watch?v=w8kDWPf_bHUI like this video to help me understand how knives work and what degree to pick. He pushes one brand hard but many brands use the same steel and technique when making a knife.
There are so many things to pick when matching a knife to a task. metal, degree, concave/convex or traditional bevel. I am a big knife fan myself, and I would love to try to make pocket knives one day.
but don't put a 20 degree knife in the 15 degree slot of your machine, that's bad idea IMHO
