Straight blu-ray rip is currently the best quality. But very few torrents are for the full 50gb disc. It's usually an 8-12gb 1080p or ~4.5gb 720p re-encode of t

Straight blu-ray rip is currently the best quality. But very few torrents are for the full 50gb disc. It's usually an 8-12gb 1080p or ~4.5gb 720p re-encode of the blu-ray encoding. Painstakingly done to the best that can be done, but it's still a double compression. iTunes on the other hand is encoding off raw source material so it can get higher quality at smaller size than what you see on torrents.