The Kreg K4 unit is so expensive and partly plastic. This unit is half the price and built solid - all metal. With proper care I know it will last me a lifetime. You will not go wrong with this unit but big tip, if you don't have a C clamp then best to get the next model up that does come with the clamp because the pocket hole section can be used without the included clamp shoe. I didn't but I already have a clamp.
Phil 
