The LTR-48246S is capable of ripping audio at 48x CAV. Nero, CDex, Exact Audio Copy and Feurio, among other software, can all be used to rip audio at 48x with this drive. Of course, you can expect slower extraction rates when using enhanced confidence extraction modes such as EAC's Secure mode.
Whether or not the additional confidence instilled by extracting with a properly configured secure mode is worth the overall slower extraction speed is a question you must answer for yourself. Starting with a clean, scratch-free disc, I can extract the same binary data using EAC's Burst mode on an LTR-48246S, Secure mode on an LTR-48246S, and Secure mode on an XJ-HD166S (neglecting offsets).
Read the help files and use the search function on this site and others to learn more.