There was a field of view research paper pdf that did a comprehensive comparison, including speed tests of all the major FOV algorithms. It encouraged me to port the python code on Rogue Basin for shadow casting to AS3 for my game.
It used to be here:
http://roguecentral.org/libtcod/fov/fov.pdfI've tried contacting the site, but to no avail. Does anyone have a spare copy of the pdf or the ear of the guy who wrote it at all?