I use a 8 inch smith diamond tri hone bench stone (about 100 bills on amazon). Its big enough for the chief knifes and it works really good! I had a gatco natural stone system but the 4 star blades just killed the natural stones. I also have a 1x30 variable speed grinder/sharpener (totally sweet!) now but I sill use the tri hone for the final edge. I also have a full size smith diamond rod that I use to do a quick edge for after when my wife or kids uses the granite counter top for a cutting board
