I have the jessem paralign (very similar to the dowelmax) and domino 500. I first purchased the doweling jig and used if for several years before getting the domino. When I want extreme accuracy, I reach for the jessem jig. I may still have a learning curve on the domino but can't quite get the same accuracy with it. The jessem paralign doweling jig is a great tool, if I had limited funds and could only pick one, I would chose the doweling jig over the domino. The doweling jig is however much slower.