All three of them are very different >_>
Crescent moon is probably more difficult than you could play right now, I'd recommend H, it's quite simple. 236B (soko darou) is + frames and a very good trick, 6C is jump cancellable on block. These two things by themselves make him a simple character, along with the sheer power of 214C, and the fact he has 236C reversal.
F is a much more simple, thought based style. Using each of your buttons in the proper way isn't difficult, but getting it the best takes much work.