As ikegami already mentioned, Text::CSV is just a wrapper over Text::CSV_XS nowadays, but what he did not mention is that Text::CSV bundles Text::CSV_PP which is the pure-perl implementation of Text::CSV_XS.

Text::CSV_XS is about 50 times faster than the pure-perl version. Text::CSV is the module of choice, which you can speed up, even afterwards, by installing the XS version.

I maintain the XS version, and communicate with the author of the pure-perl version, so once Text::CSV_XS is updated to a new release, the wrapper modules can follow within days with the matching pure-perl version.