Don carlo(s) is my all time favourite opera and this particular version is amongst the best performed on video. I have the DVD version and am looking forward to a remastered blu ray upgrade. However the video transfer makes me wonder if I have inserted the old DVD disc instead. The picture is fuzzy and the PCM sound was only a slight improvement to the Dolby stereo on the old DVD. The only improvement is that the DVD version was done in letterbox ratio and blu ray filled up the 16:9 screen. I still give it 5 stars as I don't want to pull down the rating of this wonderfully sung and acted performance. But if you are hoping the blu ray transfer will vastly improve on the DVD version you might be disappointed like me.