I think the 2/5 combo ought to be a good stone to have. The 2 ought to be good for bevel setting. I can tell you that the 5k is very good from personal experience. I use a 1k to set the bevel but a 2k isn't that far from it. I've read that the DMT 8000 is more like a 4k but I don't know if there is anything to that.