On switching from Rogers to FibreOP 2.0 two weeks ago I did notice that HD picture quality was a bit softer, especially on a 55" screen. However after playing a bit with colour, brightness and sharpness controls on the set I got it to the point where the difference disappeared for all intents and purposes. On a 30" set no changes were required. As to 5.1, with Mediaroom and an optical connection to my receiver the sound is fabulous and all readouts on the receiver's control screen are identical to what I was seeing when viewing comparable programming on Rogers.