Halc wrote:I think it's one thing to manually select a too low write speed (compared to the CD-R speed rating) and get worse results, but even more hilarious that when you write significantly faster (more than twice the speed) on a disc compared to what the drive's self-calibration would have chosen that you end up with less errors.
That actually describes my personal experience. I bought a small batch of Mitsui 24x media about a year just to see if it lived up to its hype and was worth its incredible expense (no and no, it turns out). With SMART-BURN enabled on my LTR-48246S it burns at 24x and gives a lot of errors towards the end of the disc. With SMART-BURN disabled I burn it at 40x with much lower errors.
The strangest thing of all is that there was one firmware version a number of releases back that burned the media at 40x with SMART-BURN enabled. I thought, "Great! Lite-On has recognized that this media burns better at higher speeds and has adjusted accordingly." Unfortunately, with the next release of firmware SMART-BURN knocked it back down to 24x again. Go figure...