I use CD Creator and/or Real Jukebox Plus. I have about a 10% "ruin my blanks" rate at 8x copying speed. I would also get a copy of Audiograbber to be sure that the copies you're making are identical copies - it has a feature that allows you to compare to music files and reports any discrepancies. In any case, 1 in 10 screwing up is worth it if you're copying at 8x or 12x speeds, just for the time savings, as long as the copies that don't screw up are identical.
