From reading numerous posts on this forum it APPEARS, that the Philips 1600 series drives, the Dell/Philips 8631, and the BenQ 1600 series are all virtually the same drive, and that you can flash the drive with Philips firmware, Benq firmware, or the Dell firmware. And if I'm reading all of this correctly, the main benefit to flashing the benq firmware is more support and higher write speeds on more media types. It would be nice if we could get some kprobe scans from two or three assorted medias, from someone with all three firmwares to see just how much difference there is in actual write quality. I have the Philips/Dell 8631 using the CD21 firmware, and burned a tyg02 8x -r at 4x, and a ritek g03 4x -r at 4x, and both kprobes showed average pif of 0.00. Are others getting the same results from these same media's?