[abbadon]

my toshiba sd-r5002 rips as high at 12x quite often at then end of a dual layer, though it all depends very heavily on the quality of the dvd. A brand new dvd will average around 8x for the whole rip, while an old scratched rental will often average 4x. I assume this is consistant for all dvd rips, as error correction comes into play with old discs. However, this drive is only 2x write at the moment, so that may limit you.