I am truly amazed at the performance difference between this and the less expensive (2 wheel) Minosharp. This model is SO MUCH BETTER and well worth the extra cost. As well as having 3 wheels, which are significantly larger than on the 2 wheel model, this unit is also more robust, stable, comfortable and easier to use.
I was never really satisfied with the performance of the smaller Minosharp on my Global knives, so when one of its wheels broke I began looking for something better. Being sceptical about buying another Minosharp I almost bought a different type of sharpener that has 'Global' in its name, however, after reading a number of unfortunate reviews of that product, I chose the slightly dearer Minosharp Plus3 instead. Now, after very little effort, my precious Globals are back to their brand-new sharpness and are once again a pleasure to use.