after losing my old knocking box the other day i'v been looking for a box and collar and going for a pipe or mommut barryvox box depending on the collar's on which box i get, i did pout a add up on hire for a second hand one and the prices by the time i'm pout the diesel in the car it's not much moor to get a new one, so what is best for where and tear, battery life ect