Hi there I'm looking for a nice combination stone or a few stones as I'm working on truly learning the intracacies of sharpening. I usually get a pretty decent edge but have not reached even close to where I want to be. I have an izula 2 that gets carried most days and have ordered a custom elmax from a maker here. My budget is around 100 bucks. Also if there is a good book for sharpening I'd be interested to know about any suggestion on that.