This C4U (a.k.a MHZ, Cube4U, Cube4You) Gigaminx Speed Cube is a great addition to the popular C4U cube series. C4U cubes are highly regarded by most cubers for their excellent ability to cut corners. They also tend to pop less and have smoother turning than many other cubes. They are available in many different colors and have been gaining in popularity recently despite some reports hat the quality can deterorite over time. The general consensus is that C4U cubes are one of the better cubes available on the market, and are recommended for speedcubing