Shoryuken.com writer Suriel Vasquez wrote a great canvass of your controller options as a fighting game player, and the Hit Box stickless controller is one of the listed options. Check out some of what he has to say:
"One example, the Hitbox controller, replaces the stick with four direction buttons and has gained some favor among the fighting game crowd over the last couple of years. And unlike the controller, the Hitbox could actually have executional benefits.
Though David “UltraDavid” Graham has stopped competing in tournaments in favor of commentating due to a nerve issue in his hands, he contends that Hitbox might actually be the best method for playing fighting games. “The hitbox is the only input mechanism for fighting games that was designed after and for fighting games,” he says. “The others were just the mechanisms that happened to be in use when fighting games came up.” As such, the directional inputs allow for things that are much harder on other kinds of control methods."