What is the real difference between DVD-R and DVD+R?

Question

I went in FYE (For Your Entertainment) the other day, and noticed there were packs of 20 blank CD's with both DVD-R and a separate one that said DVD+R. What's the difference?

Answer 1

Copied and Pasted right from Wikipedia.org

"There are a number of significant technical differences between the "minus" and the "plus" format, though most users would not notice the difference. One example is the DVD+R style ADIP (ADdress In Pregroove) system of tracking and speed control being less susceptible to interference and error than the LPP (Land Pre Pit) system used by DVD-R, which makes the ADIP system more accurate at higher speeds. In addition, DVD+R(W) has a more robust error management system than DVD-R(W), allowing for more accurate burning to media independent of the quality of the media. Additional session linking methods are more accurate with DVD+R(W) versus DVD-R(W), resulting in fewer damaged or unusable discs due to buffer under-run and multi-session disks with fewer PI/PO errors."

Answer 2

There isnt

Answer 3

Older DVD player could only be capable or reading either DVD-R, or only DVD+R. Now, all DVD players can read both, whether it says so or not.