We bought this as a second potty for my son because he refused to use the first kind we bought him. He loved to make the revving sound with it so we told him he could only make the sound if he was using the potty. It really help take some of the resistants in potty training.
The only thing I would change would be the pee guard on it for boys, there really isn't anything so my son had to learn to aim straight down or he would end up peeing on his pants or run under the potty insert onto the floor under the potty.