Drexel, congrats on an excellent set.
The best "cleaner" is distilled water on a microfiber cloth. Never use chemicals.
You will be seeing black bars on certain movies. It is dependent upon the aspect ratio. Movies like The Dark Knight and The Dark Knight rises even change during the movie. The IMAX footage image quality is second to none, looking even better than the rest of the film.
Cable picture quality in general varies greatly from channel to channel and even show...