Hi,
My opinion only - but if you want it to look more difficult than what it actually is, I'd go with the second one. The first one looks like it's just strips sewn together and the third one, with the frayed edges, could give someone an idea that it was not "finished", not too "difficult" and not very "detailed". The second one, on the other hand, take thought to figure out how it was pieced and it has more of a "professional, quilt pattern" feel to it. My 2 cents worth! Good luck!