I've used both DVD+R and DVD-R and have the best compatibility results from DVD-R...of course, that also depends on the DVD burner and the DVD player you're using it in...for the most part, either media should work in recent stand alone devices and DVD ROMs, but as I said, I've gotten the best compatibility results from DVD-R.
That depends on which one your TV's DVD player prefer.
If both works then go for the cheaper of the two. DVD+R is normally the cheaper one and can be booktyped to DVD-ROM providing your burner supports such function.
I want to use it for backing up my data on my hard drive. I do not have a TV DVD Player. Just computer DVD ROM & DVD Writer.
I am also going to buy another DVD writer for my second PC. I am thinking about Sony. Do I need to mention any special specs like DVD+/- or anything else ?
I have a choice of LG OR Sony both are same price so which is better ?
The DVD-R / DVD+R thing was a lot bigger a few years ago. Drives were more finicky than they are now, and some only worked with one type or the other. It's even less important, since, as you mentioned, you don't plan to burn DVD movies for watching in a home entertainment DVD player.
Decent media of either type should work without a noticeable difference...
For best quality & life of the burnt disc & data integrity, DVD's still only have a limited shelf life also.
If you don't need to keep the data for very long then burn at 8x.
From my experience the +R's burn in half the time of the -R's at the same speed. I don't know why & people I have asked don't either.
Also only Sony OR LG is the only choice I have.
Are they OEM or boxed? Sony OEM is rubbish, the boxed is better (because of firmware).
I've heard of LG's failing at about the 1 year mark too often.
Any of the brands that wusy & I have mentioned are a far better choice.