I own a x2 and it works great, I'm able to move it between both boats, the difference compared to the x4 it lacks depth display , so I look at the rigger instead. I fish on friends boats equipped with x4d and they perform the same. I like the x4 being wire less,. The x2 transducer placed on the down rigger really only needs to go down a foot, so it's not a big deal. Haven't experienced any inconsistent readings.