what is the difference between DVD+R and DVD-R? Which one is better?

Answer 1

the + and - is to say which DVD is compatiable with which processor. Neither are better than the other, but +R is LESS compatible... I always buy CD and DVD -R.
Why is -R more compatible you ask?
The DVD-R media are officially approved by the group called DVD Forum, and the DVD+R are not. The DVD+R media are supported by the DVD+RW Alliance. So since "+" has not been approved most DVD companies like to go with the "-" because it seems to be the standard.
F.Y.I. I usually don't buy RW (re-writables) because they produce low quality and you are more likely to loose your data...
The answer from "The Lunatic" is true too, but just the start of it... :O)

Answer 2

DVD-R = written in one layer

DVD+R = written in multiple layers (More Storage)

DVD+R is better but more expensive.

Answer 3

all the same
CD-ROM Read
CD-R Write Once
CD-RW Rewritable
DVD-R DL Write Once
DVD+R DL Write Once
DVD+R Write Once
DVD+RW Rewritable
DVD-R Write Once
DVD-RW Rewritable

this will cover all
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Answer 4

http://en.wikipedia.org/wiki/DVD%2BR

http://en.wikipedia.org/wiki/DVD-R

Answer 5

Refer this http://www.answerbag.com/q_view.php/2279 for your question.