A year ago, after writing many replies to forum questions by potential purchasers, I put together a post in the Tips and Tricks Forum about the differences between the 'regular' and the audiophile edition of BIAB. I believe all the points made are still valid. Others added good info, too. PG Music made the post a sticky.

Find it here: http://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=378939#Post378939