Dvd Media Could You Help With My Blank Dvd Media Quesions?

Could you help with my blank dvd media quesions? - dvd media

Hello.
1) Maxell blank DVDs or reliability NexxTech + /-RW?

2) buying a white label like Sony are still the means of identification to be determined?

3) Is it true that the top and bottom plates is designed on an axis to be scratched?

4) will read a DVD player + / DVD-RW by its brand?