I prefer paper piecing to foundation. With foundation you are more limited on what designs you can make. With paper you can make several small and intricate parts of a block and then join them whereas with foundation you must stick to a specific pattern. I don't know if that makes sense if you haven't done both. Foundation may be better for "crazy" quilts, but you always run the risk of getting some unwanted puckers sewn into the foundation that cannot be removed. The paper is all torn out. It can be messy, but works great once you get the hang of it.