It depends on the feel each driver is looking for. Are shop has sold them and some racers like them and some hate them. For me personally I don't care for them but my shop owner uses one and thinks its great. Its basically a tuning option on the way the radio wheel feels to the racer/basher. Just have to try one out to be honest because everyone likes a different feel of their radio so it will come down to whether you like it or not.