I'm going to add my .02 in this thread as well. Last night, my burns with my new NEC ND-2500A drive were at 12 minutes with my 4x DVD+R TDK media & 8 minutes with my 4x Memorex DVD+R media. The reason for the difference in speeds is due to the drive Writing the Memorex at 6x.
Well, for some strange reason, as of today, it takes over 20 minutes now to Write to this TDK media. I have no clue as to why. I didn't do anything today that would change what I was doing last night.
In addition to this strange madness, my ICopyDVDs2 no longer wants to work. It was working flawlessly 2 weeks ago. I installed DVDDecrypter & DVDShrink & now ICopyDVDs2 no longer works.
This is a strange world of recording DVD media, I tell ya.