We picked up two for my son and two for my nephew (this one and the Unleashed).  This one has a spring action, and is a huge hit with the boys (3 1/2 and 4 1/2) and the dads (heading towards 40).  They love that they have the sound built in.  It is a bit pricy for what you get (just a mom's two cents) and I don't think it will last long, but it makes them happy.