Pepakura, 3D printing, Eva foam, which one gets the best details and looks?
Oh new people. They're so cute.
Hello
HaloReach1827 ! Welcome to the forum! You have asked a very common question. Unfortunately, the answer is vague and ambiguous.
Each of the listed methods have pros and cons. Each can be used to get extremely fine details and beautiful look to armor. It comes down to how good you are with each method, how good your model/patterns are, and how much time you want to invest.
Personally, I think 3d printing would probably get the most detail, but it depends on having excellent models, a high quality machine, and perfected settings (among other things). Pepakura gets hit for not being very detailed but I haven't had a problem with it on my ODST. foam is good for detail but you build it in layers. My personal issue with foam is that if your cuts aren't perfectly straight it is super obvious and (in my opinion) looks bad. Foam is cheap and easy to work with, though and so if you're learning you can make a bunch of "bad" pieces without spending to much money while learning.
At the end of the day your choice of medium has more to do with your time, budget, and experience than with the level of detail you are trying to achieve. There is some gorgeous armor that looks real AF and has crazy detail made through each of the methods. There are also armors made by each of these methods that look less than perfect (my ODST has pieces that look amazing and some that really don't).
I hope this information is helpful. I love watching builds from the beginning so I hope you make a thread and start a build!
As always, don't be afraid to ask questions and try stuff!
Happy crafting!