http://www.inference.phy.cam.ac.uk/mackay/itila/Potter.html http://www.inference.phy.cam.ac.uk/mackay/itila/Potter.html I haven't read it, but this comparison

http://www.inference.phy.cam.ac.uk/mackay/itila/Potter.html http://www.inference.phy.cam.ac.uk/mackay/itila/Potter.html I haven't read it, but this comparison has convinced me of its worth.