I'm saying that I took 3 Verbatim 16x DVD+R and burned them in a LiteOn SOHW-1653S, a LG GSA4163B and a Pioneer DVR-A08XLA. All with "out of the box" firmware, so some may have had more updated versions than others. Full burn on the discs, with 5 large .nrg and .wmv files. The LiteOn took 6m26s but had ALOT of errors, the LG took 7m42s and had little or no errors and the Pioneer took 7m25s and had slightly less errors than the LG. YMMV, but those were the results I got.
PS : The Benq (non pro version) took me 7m39s, but I couldn't get CDspeed to check it for errors for some reason, even after a firmware update. I suspect there was something physically wrong with it.