Go to
www.dvdinfopro.com, and download DVDInfoPro, it's freeware. You'll be able to detect the manufacturer ID using this program, which is independent of the actual brand name. To learn more about distinguishing one manufacturer ID from another, which is good and which is crap, I'll refer you to
www.nomorecoasters.com.
In a nutshell, dvds IDs to look for:
Taiyo Yuden
MCC
Prodisc
Ritek
Manufacturers to avoid:
Princo
Onidtech
MUST
Optodisc
Longten
CMC
The above list is not meant to be exclusive, so go to the website and read all about it.
Neuro