Xfile is by far the most robust, most useful, and the fastest professional file manager for OS X.
Xfile enumerates the massive OS X directory '/usr/share/man/man3'. There are 8559 files in that directory, and Xfile offers far more data than any other file manager for OS X - a full ten columns of it. And yet Xfile is so fast that it's read and displayed all 8559 rows of data in less than 200 milliseconds (1/5 of a second).