The answer is simple, yet different for everyone. I like good quality films, but don't really see a difference between 1080p, 720p or a bit worse quality movies. If I had a wall sized TV, than it might occur to me different. There are also people, who claim to see big differences and they always stick to the actual best. From a technical aspect, it also depends on your broadcast provider's quality or the movie's quality you download to a pendrive, what you will see. I would vote for the better one, if it's just slightly more expensive, though I have a 720p one, that's also called HD-Ready and don't have any problems with it. The cause is just that the more modern one has probably more options and functions, that you might want to use. Of course everything depends on your habits.