Dvd Media What Kind Of DVD Media Is Best For Acer Aspire 5520-5290?

What kind of DVD media is best for Acer Aspire 5520-5290? - dvd media

I have a DVD / CD and there are so many options: DVD-R, DVD + R, DVD-RW, DVD + RW
I am sure that my computer to read or write, I can buy DVDs.