I think after they gave the MXT the 7 tone ID, it lost it's footing. It's basically a stripped down version of the MXT and silent search, although there is a threshold adjustment on the board. One could ad a potentiometer and make it a threshold. I prefer the way it is. When I crank it to max, it chatters almost like one. Most reviews gave it almost a 4.6 out of 5. I love the ruggedness of it. Seven years of use and it's still like new. Even the foam on the handle. My previous one (Land star) looked like !!!! and I had to replace wallowed screws and rivets.