what is the difference between regular dvd disc or blu-ray disc?
1 Cost â This is one of the most important differences between a Blu-ray and a DVD disc. 2  The cost of Blu-ray disc is double the amount as that of a DVD disc. 3  However, experts think that the Blu-ray discs will be much cheaper in future as recession had a high impact on the disc sales.
Blu-ray reviews: 5. A Blu-ray has about 5-6 times the visual information as a DVD, and the sound is often uncompressed and loss-less meaning you get much better sound than DVDs.