The coarse/fine (blue/red) can handle most tasks. As mentioned in one of the earlier posts the extra coarse (black) works better for chips and reprofiling. That is what I use at home then on to the blue-tan then a loaded strop. When I'm out I use the diafolds blue/red and green/tan. You can get a mini hone in extra coarse as a "just in case" and it doesn't take up much space.