Both the K-Pro and the K-Plus have an all-round brewing method, external adjustments and 22 microns per click. However, the similarities end here. The K-Pro has a capacity of 30-35g, whereas the K-Plus has a 35-40g capacity, meaning that more coffee can be brewed from each batch. In addition, the K-Plus has features that the K-Pro does not have, such as the magnetic catch cup and blind shaker. So, although both offer excellent ground coffee, there are some small differences that may impact whether the K-Pro or K-Plus is best for you.