i like avi, its quick and easy. i understand people liking the iso versions, but those 22 gb versions of a 1,50 gb otherwise file, is a little overwhelming. But for those serious guys that have to have those, i understand. i like the smaller files myself, and if i download a big torrent iso, i usually end up deleting the massive file and keep the 1080 or 720, but never keep both. I just dont clutter my computer up with multiple files of the same torrent video. So the avi wmv and m4v are perfect for me.