Pac with only one film each type: Frustrating if bubbles or dust and no 2nd chance. Prefer multi-packs

Good quality movies, well finished, thick enough to protect the screen of reasonable shocks, and adjourned to free itself the objectives of cameras and key sensors. But only one film each type, so frustrating if bubbles or dust because no 2nd chance .... Prefer multi-packs + notice that the back film is not very needed with a hull.