Anakin. Using Luke Skywalker as a measuring stick from a New Hope he has a reaction feat of at least mach 33 which is 33 times faster than sound. You get this because an X-wing is able to break the gravitational pull of a planet easily, and Luke Skywalker was able to use the Force to make the one in a million shot that destroyed the Death Star while going at those speeds. The high end would be having reaction speeds that are 99% the speed of light using real-time to measure the journey the Millennium Falcon had from Hoth to the Asteroid Belt in Empire Strikes Back.