Ketchup - Are you sure that Secure mode ripping was enabled when you got 25x ripping speed? I've had several LiteOn drives and with the Secure ripping configuration the best I achieved was about 4x. Outside of Secure mode (e.g. Burst mode) I was able to achieve 15x and better, but the program won't guarantee accuracy with that setting. If you're really getting that speed with LiteOn drives in Secure mode, would you mind posting the model you're using?
I'd also like to second the comments about Plextor drives mentioned previously. I use a Plextor Plexwriter Premium CR-RW with the Plextor Plextools software and I get quite accurate rips at greater than 20x speed using the very highest level of error detection/correction. However, this drive has been discontinued and I don't know if the current models of DVD-R provide the same degree of precision. Perhaps someone with more knowledge about these drives can comment on the current lineup.
I'd also like to second the comments about Plextor drives mentioned previously. I use a Plextor Plexwriter Premium CR-RW with the Plextor Plextools software and I get quite accurate rips at greater than 20x speed using the very highest level of error detection/correction. However, this drive has been discontinued and I don't know if the current models of DVD-R provide the same degree of precision. Perhaps someone with more knowledge about these drives can comment on the current lineup.