Depends on if you pick the fast download versus the higher quality. I'd give satellite a bit better in either case but almost unnoticeable for higher quality download. I have noticed some flatter color on download and some jutter on the fast. All are acceptable.
HBO on demand is all Internet. Some of the on demand movies are pre loaded to your dvr via satellite. Those are all PPV.
Thanks, I did a little test last night and to me the record option suppled a slightly superior picture.