Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Lesson Learned

Blu-ray's are not all the same. An assumption was made here to attach a premium value on my "newest" blu-ray purchase with as I ultimately found out exception to any 5.1 surround sound features re-mastered from other earlier production recordings in DVD format. Just because it is blu-ray is in my opinon down right out deceiving the public while setting back in time all credibility by drifting away from a once acceptible industry standard. I did not purchase this video labelled "blu-ray" for the same substandard 2.0 (flagrantly advertised- surround sound? -one speaker in front & one in back?) stereo performance now inherited in with most of my favorite classics! Don't buy it, or them! In comparison with my original DVD this is much more grainy than it, and because of that in the near future I will not ever pre-order any "blu-ray" products again without the mention of compatibilty issues addressed for customers with 5.1, 7.0 or higher sound systems!