Thanks to all the people who kindly replied to my post!!
I runned out of blank Imation disks, and right after i get more tomorrow i'll post the media code info. But i can tell that the code is exactly the same as the previous medias i bought at the same store. They are FUJIFILM03.
One thing i noticed is even if i set Nero or DVDDecrypter to burn at 8x, the maximum speed it actually burns is 6x!!!!
And of all the 10 medias i burned, that refused to burn at 4x but burned at 8x (actually, 6x....), NONE gave me any error on Scandisk or Transfer Rate test on Nero CD-DVD Speed.
I know i should look for verbatin, TY or other excellent medias, but the problem is, they are NOT sold here in my country, so i need to get the best of whats avaliable. So far, Imation and Maxell where the best avaliable, until Imation started this strange behaviour and Maxwell started to come as Ritek05.
Also, thaks for the tip on burning speed. I learned that CD burning should always be slower, so i did the same concerning DVD burning....
Also, i'll try to upgrade my 4163B to A106. Just cant seem to find it anywhere here on this site!!