Hi, so I've been curious about this for some time. I've seen in some places (mainly reddit) that it's better to get 720p WEB-DL's over 1080p ones for currently airing TV and movies without Blu-Ray sources. I'm not familiar with the technical encoding stuff, but why would a lower resolution file be preferable? Is it just for convenience or does it actually look better? Further, I've seen elsewhere that it's the opposite for animation (1080p over 720p).

So, what am I missing here?